plication

nouns

an angular or rounded shape made by folding
"a fold in the napkin"; "a crease in his trousers"; "a plication on her blouse"; "a flexure of the colon"; "a bend of his elbow"
bend, crease, crimp, flexure, fold, plication
is derived from
plicate
the act of folding in parallel folds
pleating, plication
is derived from
plicate