late 14c., "to fold, gather in pleats," from O.Fr. pleir
"to fold," from L. plicare
"to fold." The noun meaning "a fold, a crease" is attested from c.1400, from Anglo-Fr. pleit
, O.Fr. pleit, ploit
"fold, manner of folding," from L. plicatus,
neuter pp. of plicare
(v.)). Meaning "interlaced strands of hair, ribbon, etc." is from 1520s.