Funny house mice with no tail (5)
I believe the answer is:
comic
'funny' is the definition.
(comic can mean funny or humorous)
'house mice with no tail' is the wordplay.
'house' becomes 'co' (I can't justify this - if you can you should give a lot more credence to this answer).
'with no tail' means to remove the last letter.
'mice' with its final letter taken off is 'mic'.
'co'+'mic'='COMIC'
Can you help me to learn more?
(Other definitions for comic that I've seen before include "Stand-up possibly" , "Amusing person" , "Professional joke-teller" , "Funny, droll" , "Stand-up comedian" .)