May is the little child spoken of (5)
I believe the answer is:
might
'may' is the definition.
(synonyms)
'the little child spoken of' is the wordplay.
'the little child' becomes 'mite'.
'spoken of' shows a homophone (sound like).
'mite' is a homophone of 'MIGHT'.
'is' acts as a link.
(Other definitions for might that I've seen before include "Doubtful" , "Clout" , "word expressing possibility" , "May, in the past" , "Force; could" .)