sb. Obs. rare. [= MDu. cnic, Du. knik, MLG. (whence mod.G.) knick. Orig. echoic. Knick bears the same relation to knack, that click, snip, bear to clack, snap.] A light-sounding snap or crack as with the fingers.
1580. Hollyband, Treas. Fr. Tong, Niquet, a knicke made with the thombes, nailes, and teeth.
1611. Cotgr., Niquet, a knicke, klicke, snap with the teeth, or fingers.