Run past when speaking (3)
I believe the answer is:
bye
'run' is the definition.
(type of cricket run)
'past when speaking' is the wordplay.
'past' becomes 'by' (as in years gone by).
'when speaking' indicates a 'sounds like' (homophone) clue.
'by' is a homophone of 'BYE'.
(Other definitions for bye that I've seen before include "See you" , "Run scored in cricket from a ball that passes batman" , "(Informal) valediction" , "[ADIEU]" , "Get one to advance to the next round without playing an opponent" .)