A rounded, un-sharpened area on the blade of a knife, designed to give the user additional control of the knife, or in some cases to keep the knife from closing on the user's hand if the lock fails.
"I'm so sick of watching YouTube videos where dumb hicks pronounce Choil 'Choy-ill' instead of Coil! Hasn't anyone ever heard of silent letters?"
by Enderwign February 2, 2009
by Dansonn September 1, 2007