- top hat.
- Slang. table tripod.
- Also hi hat. a set of high-hat cymbals.
- a variant spelling of high-hat (def. 4)
- another name for top hat
1889, “tall hat;” also used synechdochically for men who wear such hats; figurative meaning “swelled head” is from 1923. Drum set sense is from 1934.