'Mobcap' definitions:

Definition of 'mobcap'

(from WordNet)
noun
Large high frilly cap with a full crown; formerly worn indoors by women

Definition of 'Mobcap'

From: GCIDE
  • Mobcap \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. [1913 Webster]