2 definitions
for Mobcap
From The Collaborative International Dictionary of English v.0.48 :
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]
From WordNet (r) 2.0 :
mobcap
n : large high frilly cap with a full crown; formerly worn
indoors by women