A claim backed up by strong evidence.    From Wordnet, Princeton University. 

Adjective : a low-backed sofa.    From Dictionary.com. 

Noun : the back of the head. ,the clothes on his back. ,He put his back into the task. ,the back of a hall. ,the back of a chair. ,the back of a jacket. ,The fall broke his back. ,the back of a binder.    From Dictionary.com. 

Verb (used with object) : to back a candidate; to back up a theory with facts. ,to back a horse in the race. ,to back a car. ,to back a book. ,a beach backed by hills. ,a singer backed by piano and bass.    From Dictionary.com. 

Adjective : at the back door; back fence. ,back settlements. ,back files; back issues. ,back pay. ,back current.    From Dictionary.com. 

Now, Lebanon's western backed, U. S.-backed prime minister, has called this nothing short of a coup.    From Wordnik.com.  [CNN Transcript Jan 23, 2007] Reference

Her label backed down and let her do the album, which laid a big old stinky egg.    From Wordnik.com.  [Crazy Days and Nights] Reference

By September he had attracted the interest of Neil Bogart, who was starting up a label backed by Warner Brothers.    From Wordnik.com.  [Bill Aucoin obituary] Reference

Can’t wait to see another label backed, financially flush operation flutter in the wind. reply.    From Wordnik.com.  [We Catch Our First, Fleeting Glimpse Of VEVO On YouTube] Reference

Any backseater worthy of the name backed his pilot up, no matter what.    From Wordnik.com.  [Typhoon Season]

Facebook 'panic button' calls backed by police chiefs.    From Wordnik.com.  [WN.com - Articles related to Facebook rearranges yet again] Reference

Call backed into the chaparral, mindless of the thorns, and waited.    From Wordnik.com.  [Dead Man’s Walk] Reference

As soon as I got on the phone, there were already four hundred calls backed up.    From Wordnik.com.  [Your Call Is (Not That) Important to Us] Reference

More than 100 ambulances became stuck as streets went unplowed and 911 calls backed up.    From Wordnik.com.  [Deputy Mayor Admits Fault For Bungled Snow Response] Reference

Who could refuse to respond favorably to a call backed by arguments so potent? — not I.    From Wordnik.com.  [ROCKY MOUNTAIN LIFE] Reference

Emergency calls backed up, and some people who needed urgent medical care did not get it.    From Wordnik.com.  [FOXNews.com] Reference

Merce Cunningham taking a curtain call backed by his dancers and the members of Sonic Youth.    From Wordnik.com.  [Dance: Culture and Celebrity] Reference

Myspace Music Videos, another high-profile content collection from major labels backed by an already popular social network.    From Wordnik.com.  [Mashable!] Reference

We're kind of backed up here with this three hours.    From Wordnik.com.  [CNN Transcript Sep 3, 2005] Reference

And he's kind of backed away from it several times now.    From Wordnik.com.  [CNN Transcript May 25, 2008] Reference

And it gets you so trapped and kind of backed into a corner.    From Wordnik.com.  [CNN Transcript Sep 26, 2007] Reference

And he ` s kind of backed off his story he told authorities.    From Wordnik.com.  [CNN Transcript Aug 4, 2008] Reference

I have "backed" him, in no other sense to any satisfactory result.    From Wordnik.com.  [Punch, or the London Charivari, Volume 102, May 28, 1892] Reference

UNIDENTIFIED MALE: He's kind of backed away from gays and lesbians.    From Wordnik.com.  [CNN Transcript Apr 21, 2008] Reference

When we went into recovery mode, they kind of backed the cranes off.    From Wordnik.com.  [CNN Transcript Aug 3, 2007] Reference

And so I really listened to what they said and I kind of backed off.    From Wordnik.com.  [CNN Transcript Apr 28, 2008] Reference

And so for the first time he kind of backed off -- "Well, you know.".    From Wordnik.com.  [CNN Transcript Nov 14, 2001] Reference

I just feel kind of backed in a corner with a couple people right now.    From Wordnik.com.  [dragonwench Diary Entry] Reference

And then they got us wanting to fight there, and so I kind of backed out of that.    From Wordnik.com.  [Oral History Interview with Carnell Locklear, February 24, 2004. Interview U-0007. Southern Oral History Program Collection (#4007)] Reference

So she has kind of backed away from him, hasn't thrown him overboard, but she's backed away.    From Wordnik.com.  [CNN Transcript Jun 30, 2009] Reference

Do you feel like he's kind of backed off of that and has maybe come to accept your definition?.    From Wordnik.com.  [Press Briefing By Mike Mccurry] Reference

But then they seem to have kind of backed off that a little bit and are talking about doing it.    From Wordnik.com.  [CNN Transcript Aug 6, 2008] Reference

He certainly kind of backed off that later and said he wasn't saying it was a probable scenario.    From Wordnik.com.  [CNN Transcript Mar 4, 2007] Reference

I've talked to people at Wal-Mart, and I was told by one executive that they kind of backed into this.    From Wordnik.com.  [It’s Not Easy Buying Green] Reference

Ellen carried some in her skirt, Graham took off his jacket and made a bundle, and William "backed" a bagful.    From Wordnik.com.  [Three Years in Tristan da Cunha] Reference

Then we kind of backed up on and said, wait, no, they can't be confirmed as tornado fatalities, which is amazing.    From Wordnik.com.  [CNN Transcript Apr 28, 2008] Reference

Ms. OUELLETTE: I actually - I do, actually, and this is kind of backed up by some the math teachers that I've spoken to as well.    From Wordnik.com.  [The Calculus Around You] Reference

And then he, if you will notice, towards the middle of the debate, kind of backed off, and said, whoa, don't take this personally.    From Wordnik.com.  [CNN Transcript Nov 15, 2007] Reference

You can definitely see the planes kind of backed up trying to head in from the south, from the north, from the east and from the west.    From Wordnik.com.  [CNN Transcript May 30, 2007] Reference

And I think quite frankly his campaign kind of backed off of it a little bit and said, well, we don't just -- we don't mean John McCain.    From Wordnik.com.  [CNN Transcript Jul 31, 2008] Reference