Strain a gut? (3)
I believe the answer is:
tug
'strain a gut?' is the definition.
'tug' can be an answer for 'strain' (thesaurus). I'm not certain of the 'a gut?' bit.
'strain a gut?' is the wordplay.
'strain' is an anagram indicator (I've seen 'strained' mean this).
'gut' with letters rearranged gives 'TUG'.
Can you help me to learn more?
(Other definitions for tug that I've seen before include "Pull suddenly; boat" , "Pull forcibly" , "gravitational force" , "Pull jerkily" , "Pull vigorously and a boat that does it" .)