To mate with pint, getting drunk could be one (10)
I believe the answer is:
temptation
'be one' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'to mate with pint getting drunk' is the wordplay.
'with' says to put letters next to each other.
'getting drunk' is an anagram indicator.
'to'+'mate'+'pint'='tomatepint'
'tomatepint' anagrammed gives 'TEMPTATION'.
'could' is the link.
Can you help me to learn more?
(Other definitions for temptation that I've seen before include "Enticing desire to do something" , "seduction" , "Enticement" .)