Like an egg it's blown (7)
I believe the answer is:
ocarina
This clue could be a double definition.
'like an egg' is the first definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'it's blown' is the second definition.
(ocarina is a kind of wind instrument)
Can you help me to learn more?
(Other definitions for ocarina that I've seen before include "Egg-shaped wind instrument with finger holes" , "Flute-toned musical toy" , "Wind instrument with a mouthpiece and finger holes" , "Simple wind instrument" , "Small egg-shaped wind instrument with holes for the fingers" .)