Put up with terrible host entertaining most of club (7)
I believe the answer is:
stomach
'put up with' is the definition.
(synonyms)
'terrible host entertaining most of club' is the wordplay.
'terrible' is an anagram indicator.
'entertaining' means one lot of letters goes inside another.
'most of club' becomes 'mac' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'host' anagrammed gives 'stoh'.
'stoh' placed around 'mac' is 'STOMACH'.
Can you help me to learn more?
(Other definitions for stomach that I've seen before include "stand" , "Courage - guts" , "Put up with" , "Internal organ" , "Appetite for food" .)