Summer sport (7)
'summer sport' is the definition.
(sport played in summer)
This is the entire clue.
(Other definitions for cricket that I've seen before include "Insect with long leg" , "short leg seen on this field?" , "Game - "basically baseball on Valium" (Robin Williams)" , "Summer sport" , "a jumper" .)
(Other definitions for lawn tennis that I've seen before include "court action results" , "Real alternative" , "Court game" , "sport" , "Wimbledon game" .)