AK6 is a trilobate kimberlite consisting of a North, Centre and South Lobe.    From Wordnik.com.  [Marketwire - Breaking News Releases]

Just behind the mandibles are the maxillæ, which are trilobate at the end, as in the three orders of insects above named.    From Wordnik.com.  [Our Common Insects A Popular Account of the Insects of Our Fields, Forests, Gardens and Houses] Reference

But the grass lights up, and, in the twistings of the flames, stands erect the Basilisk, a huge, violet serpent, with a trilobate crest and two teeth -- one above, the other below.    From Wordnik.com.  [Tentation de saint Antoine. English] Reference