Power of child picked up by the ears? (5)
I believe the answer is:
might
'power' is the definition.
(synonyms)
'child picked up by the ears?' is the wordplay.
'child' becomes 'mite' (mite can informally mean a small child).
'picked up by the ears?' shows a homophone (sound like).
'mite' sounds like 'MIGHT'.
'of' is the link.
(Other definitions for might that I've seen before include "It expresses possibility" , "Powerfulness" , "May, in the past" , "- - and main" , "Doubtful" .)