PiccadilPic"ca*dil\, Piccadilly \Pic`ca*dil"ly\, n. [OF. piccagilles the several divisions of pieces fastened together about the brim of the collar of a doublet, a dim. fr. Sp. picado, p. p. of picar to prick. See Pike.] A high, stiff collar for the neck; also, a hem or band about the skirt of a garment, -- worn by men in the 17th century.