A pullover or cardigan, in school or college colours, on which a cloth initial letter is embroidered or sewn, originally to indicate achievement in sport.
Origin
Early 20th century; earliest use found in The Boston Globe.
Definition of letter sweater in US English:
letter sweater
noun
North American
A pullover or cardigan, in school or college colours, on which a cloth initial letter is embroidered or sewn, originally to indicate achievement in sport.
Origin
Early 20th century; earliest use found in The Boston Globe.