Men wise in imagination (4)
I believe the answer is:
magi
'men' is the definition.
(I have seen 'Wise Men' mean 'magi' so perhaps 'men' could also mean 'magi')
'wise in imagination' is the wordplay.
'MAGI' is hidden within the letters.
But, I am uncertain how this is indicated.
Can you help me to learn more?
(Other definitions for magi that I've seen before include "Travellers in NT" , "The sages who visited Jesus and Mary and Joseph shortly after Jesus was born" , "Three Wise Men of the Bible" , "Star witnesses" , "Bearers of gold, frankincense and myrrh?" .)