pinhat
nounUK /ˈpɪnhæt/
US /ˈpɪnhæt/
A pinhat is a funny hat with a pin on it.
She wore a pinhat to the party and everyone laughed.
OTHER MEANINGS
2. A small hat-shaped pin used as a decoration or badge.
He stuck a pinhat on his backpack.
3. A protective cover shaped like a hat that fits over a pin or needle.
Put the pinhat on the needle so it won't poke anyone.
4. A playful nickname for someone who always wears a hat with pins.
Our teacher is a real pinhat, always adding a new pin to her cap.