hat
n. countable A1 Beginner Oxford US //ˈhæt// UK //hˈæt// hat
n. a piece of clothing that you wear on your head. People use them for warmth, to stay safe from the sun, or just to look good.
n. a shaped covering for the head, typically having a brim and a crown. Often worn for protection against the elements, for religious or ceremonial reasons, or as a fashion accessory.
He puts on a warm hat before going outside in the snow.
The hikers wore wide-brimmed hats to protect their faces from the intense midday sun.
While the dress code for the event was technically casual, many guests arrived wearing elaborate hats that suggested a much more formal atmosphere.
Usage
Commonly used with the verbs 'wear', 'put on', and 'take off'.