Badgers wrestle or languish in the heat (7)
I believe the answer is:
'languish in the heat' is the definition.
I can't judge whether this defines the answer.
'badgers wrestle' is the wordplay.
'badgers' indicates anagramming the letters (I've seen 'badger' mean this (the letters must be badgered or bothered)).
'wrestle' is an anagram of 'SWELTER'.
'or' is the link.
Can you help me to learn more?
(Other definitions for swelter that I've seen before include "Endure oppressive heat" , "Suffer oppressive heat" , "Be too hot; Gormenghast chef" , "Suffer when too hot" , "Endure great heat" .)