Animal worker twirling pole with energy (8)
I believe the answer is:
antelope
'animal' is the definition.
(I've seen this before)
'worker twirling pole with energy' is the wordplay.
'worker' becomes 'ant' (worker is a type of ant).
'twirling' says the letters should be written in reverse.
'with' says to put letters next to each other.
'energy' becomes 'e' (physics symbol as in E=mc2).
'pole' backwards is 'elop'.
'ant'+'elop'+'e'='ANTELOPE'
(Other definitions for antelope that I've seen before include "Hoofed beast" , "Such as a gnu or eland" , "One ruminating" , "Animal related to goat" , "Springbok, perhaps" .)