Crossword Genius

Kind of boom (5)

Ross

I believe the answer is:

sonic

'kind of boom' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for sonic that I've seen before include "Boom of jet aircraft" , "Producing sound" , "seven hundred and forty three mph!" , "Type of boom" , "of noise" .)

I've seen this clue in the Universal and the King Feature Syndicate.
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