Howl like an owl, “Too hot to be returned!” (4)
I believe the answer is:
hoot
'howl like an owl' is the definition.
'hoot' can be an answer for 'howl' (thesaurus). I'm not sure about the 'like an owl' bit.
'too hot to be returned' is the wordplay.
'hot' becomes 'h' (abbreviation eg on taps).
'to be returned' shows that the letters should be reversed in order (I've seen 'is returned' mean this).
'too'+'h'='tooh'
'tooh' backwards is 'HOOT'.
Can you help me to learn more?
(Other definitions for hoot that I've seen before include "On (a ship/train/plane)" , "Warning sound - something not given by the careless!" , "Bird call; funny thing" , "Screech" , "what's voiced in parliament?" .)