/ hæt; NAmE / noun
1.
a covering made to fit the head, often with a brim , (= a flat edge that sticks out) and worn out of doors :
a straw / woolly, etc. hat
to put on / take off a hat
2.
( informal ) a position or role, especially an official or professional role, when you have more than one such role :
I'm wearing two hats tonight—parent and teacher.
I'm telling you this with my lawyer's hat on, you understand.
—see also old hat
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IDIOMS
- go hat in hand (to sb)
- keep sth under your hat
- my hat
- out of a / the hat
- I take my hat off to sb | hats off to sb
- throw your hat into the ring
—more at drop noun , eat , knock verb , pass verb , pull verb , talk verb
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WORD ORIGIN
Old English hætt , of Germanic origin; related to Old Norse ho̧ttr hood, also to hood .