Antelope endlessly showing style
I believe the answer is:
'style' is the definition.
'antelope endlessly' is the wordplay.
'antelope' becomes 'eland' (eland is a kind of antelope).
'endlessly' means to remove the last letter.
'eland' with its final letter taken away is 'ELAN'.
'showing' is the link.
(Other definitions for elan that I've seen before include "Flamboyance" , "Energetic style - anagram of 3" , "French flair" , "Impetuosity - style" , "Style and verve" .)