Sound of thunder (4)
'sound of thunder' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for peal that I've seen before include "Ring (of bell), clap (of thunder)" , "Thunderous roar" , "Sound of bells or laughter" , "Pale over sound of bells" , "Sound of ringing bells" .)
'sound of thunder' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for clap that I've seen before include "express approval" , "Applaud in manual way" , "Pat" , "A meeting of hands" , "Applaud manually" .)