Egg-shaped wind instrument (7)
I believe the answer is:
ocarina
'egg-shaped wind instrument' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for ocarina that I've seen before include "Toy flute" , "Egg-shaped wind instrument with finger holes" , "we blow it" , "Flute-toned musical toy" , "Egg-shaped type of flute" .)