Poise of Turing say in times past (7)
I believe the answer is:
balance
'poise' is the definition.
(synonyms)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for balance that I've seen before include "Equipoise" , "Rest" , "Surplus" , "Scale for weighing" , "Cab lane (anag)" .)