0 a tightly fitting hat, originally worn by baseball players, with a long flat piece at the front to protect the eyes from the sun --
1 a hat with a curved piece of stiff material above the eyes to give protection from the sun, originally worn by baseball players --
He wears a vest and a blue baseball cap.
He has blonde hair and wears a blue baseball cap.
He is distinguishable by always wearing a baseball cap.
I suppose that that is better than the baseball cap.
Scooters have become a fashion item which young people find essential, including a rather large pair of white shoes and often a baseball cap.
He was wearing a baseball cap.
The young man with a baseball cap in the semicircle stepped centre stage, a camera in his hand.
I tried to get street cred with the baseball cap, but everyone advisers me not to do that again.
