a large, smooth twist, roll, or knot of hair, worn by women at the nape of the neck or the back of the head.
Origin: 1775–85; < F: nape, roll of hair at nape, b. MF chaignon (var. of chainon link, equiv. to chainechain+ -on n. suffix) and tignon twist of hair (tigne (< L tinea worm) + -on n. suffix)