Fiddlers possibly get drunk in there (5)
I believe the answer is:
three
'fiddlers possibly get drunk' is the definition.
I can't tell whether this defines the answer.
'there' is the wordplay.
'there' can be anagrammed to 'THREE'.
However, I'm not clear how the anagram is indicated.
'in' is the link.
Can you help me to learn more?
(Other definitions for three that I've seen before include "... number of his "Steps to Heaven"" , "Number of times N appears in this completed grid" , "Bears or blind mice" , "Trinity, triad" , "Number of feet in a yard" .)