Noun: plus fours
- (golf) men's baggy knickers hanging below the knees; formerly worn for sports (especially golf)
"The vintage photograph showed golfers wearing plus fours on the course"
Type of: breeches, breeks [UK, dialect], britches [informal], knee breeches, knee pants [N. Amer], knickerbockers, knickers [N. Amer]
Encyclopedia: Plus fours