Grounded flier involved in three murders (3)
I believe the answer is:
emu
'grounded flier involved' is the definition.
I can't judge whether this defines the answer.
'in three murders' is the wordplay.
'in' says the answer is hidden in the clue.
'EMU' is hidden in the letters of 'three murders'.
Can you help me to learn more?
(Other definitions for emu that I've seen before include "Aussie runner" , "Bird of tremulous kind" , "Long-necked bird" , "Australian non-flyer" , "Big bird" .)