Wiktionary
tam o'shanter
n. A type of woolen hat developed in Scotland, a toorie bunnet. Originally they were worn by both genders, but now they are mostly worn by men and boys.
Usage examples of "tam o'shanter".
He wore a shabby tweed suit, a Tam O'Shanter that was twin to the girl's, and badly needed a shave.
He looked at Chekov: the ensign was clutching the strap of the golf bag with one white-knuckled hand, his tam o'shanter with the other.