Verb (used without object) : The train chuffed along.    From Dictionary.com. 

Big cats have their own repertoire of sounds e.g. the rumbled greeting of lionesses and the distinctive "chuff" of tigers.    From Wordnik.com.  [doggdot.us] Reference

Hind made a noise that was half growl, half chuff.    From Wordnik.com.  [Ms Longshot]

The machine in the bushes went chuff, chuff, chuff.    From Wordnik.com.  [Between the Acts] Reference

With a protesting chuff, the elevator creaked upward.    From Wordnik.com.  [Dance Of Death]

chuff, chuff, chuff the machine buzzed in the bushes.    From Wordnik.com.  [Between the Acts] Reference

I am so chuff - congrats to all the other wins as well.    From Wordnik.com.  [Three Days to Dead by Kelly Meding – Winners!] Reference

Behind him, a loud chuff signified to the presence of the litah.    From Wordnik.com.  [Into the Thinking Kingdoms]

The chuff, chuff, chuff of the machine in the bushes had stopped.    From Wordnik.com.  [Between the Acts] Reference

chuff, chuff, chuff, went the machine like a corn-cutter on a hot day.    From Wordnik.com.  [Between the Acts] Reference

Anyway, Charlotte is a treat to the eye as well as a pain in the chuff.    From Wordnik.com.  [Cheated. « POLICE INSPECTOR BLOG] Reference

Tomorrow – let's round things off by looking up Victoria Beckham's chuff.    From Wordnik.com.  [Spice Girls Pregnancy Betting Odds: Posh] Reference

Can't you see this advert for the vile piece of corporate chuff that it is?.    From Wordnik.com.  [Prepare to Shed a Tear] Reference

A soft ‘chuff’ … and microfine tendrils sped into his cerebral cortex.    From Wordnik.com.  [365 tomorrows » 2007 » November : A New Free Flash Fiction SciFi Story Every Day] Reference

Across the fields something quietly went chuff-chuff while fat wheels crawled along.    From Wordnik.com.  [Science Fiction Hall of Fame]

A chuff of compressed air: in the glade below, the wolf yelped and leaped into the air.    From Wordnik.com.  [Changeling]

Was it chuff! according to a Derby Fall fan - the same set as Derby with a minor changes.    From Wordnik.com.  [FallNews] Reference

HARRIS: And Christine, I don't want to stir up the chuff here, but I have to ask you this one.    From Wordnik.com.  [CNN Transcript Jun 8, 2001] Reference

He considered that for a bit, the chuff of their shoes on the rocky trail a comforting rhythm.    From Wordnik.com.  [A Breath of Snow and Ashes]

Coyote heard the harsh chuff-chuff of Kohl's hush puppy firing twice, followed by a piercing scream.    From Wordnik.com.  [Carrie]

(Far above, the Uganda Sky tours plane flew over, its nasal roar buried in the chuff-chuff of the straining Arusha.).    From Wordnik.com.  [Kahawa]

Indeed, there was silence save for a little engine going chuff-chuff and the murmurings of the two men walking behind it.    From Wordnik.com.  [Science Fiction Hall of Fame]

Then came the sound of a train slowing down in the station, and directly the quick ‘chuff-chuff-chuff’ of its drawing out.    From Wordnik.com.  [The Trespasser] Reference

She was startled by the rapid chuff of the winding-engine at the pit, and the sharp whirr of the brakes on the rope as it descended.    From Wordnik.com.  [The Prussian Officer and Other Stories] Reference

The yardmaster, now too frightened to reply at all, stood helplessly staring at Amin, and in the silence they all heard the sound: chuff.    From Wordnik.com.  [Kahawa]

And then at last I heard her coming -- chuff-chuff!.    From Wordnik.com.  [Cape Cod Stories] Reference

Every chuff that inhales it will be properly soused.    From Wordnik.com.  [In the Sweet Dry and Dry] Reference

See a rich chuff, whose wounds great wealth inferred.    From Wordnik.com.  [The Works of Christopher Marlowe, Vol. 3 (of 3)] Reference

If you tire, give me both burdens, and rest the chuff.    From Wordnik.com.  [Leaves of Grass [1867]] Reference

A grizzly bear will chuff and pop its jaw when it feels threatened.    From Wordnik.com.  [WN.com - Articles related to Thai opposition leader calls for national government] Reference

We heard the chuff of the motor in the porch, and the first to enter was.    From Wordnik.com.  [Actions and Reactions] Reference

If you tire, give me both burdens, and rest the chuff of your hand on my hip.    From Wordnik.com.  [Leaves of Grass] Reference

Everyone knew he was a chuff before this anyway, and he looks like Vinny Jones's son.    From Wordnik.com.  [Manchester Evening News - RSS Feed] Reference

"Well, he needn't have been quite so chuff with a man; I only meant -- Well, I am blessed!".    From Wordnik.com.  [Sappers and Miners The Flood beneath the Sea] Reference

Well, for one, it's as tight as a gnat's chuff and yes, we believe it shows some potential.    From Wordnik.com.  [A & R] Reference

"You needn't be quite so chuff with a man, Master Scarlett -- a man as is trying to do his duty.".    From Wordnik.com.  [Crown and Sceptre A West Country Story] Reference