U.S. Navy. a dark-blue, knitted woolen cap with a turned-up cuff worn by enlisted personnel on duty in cold weather.
any wool or woollike cap resembling this and sold commercially in various colors.
Origin of watch cap
First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for watch cap
Historical Examples of watch cap
"He's a deader," said one of the men, pulling off his watch-cap.
He turned on his light, and quickly gathered together his hockey sweater, his watch-cap, and an old pair of trousers.
a knitted navy-blue woollen cap worn by seamen in cold weather