Mob"cap` (?), n. [D. mop-muts; OD. mop a woman's coif + D. muts cap.] A plain cap or headdress for women or girls; especially, one tying under the chin by a very broad band, generally of the same material as the cap itself. Thackeray.

• A plain cap or headdress for women or girls; especially, one tying under the chin by a very broad band.