Balance that bid shows (8)
I believe the answer is:
symmetry
'balance' is the definition.
(I know that symmetry is a type of balance)
'bid shows' is the wordplay.
I cannot really understand how this works, but
'bid' could be 'try' (I've seen this before) and 'try' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
'that' is the link.
Can you help me to learn more?
(Other definitions for symmetry that I've seen before include "Proportion; beauty of form" , "Property of this grid" , "Balance between two parts" , "Regularity of shape" , "Pleasing proportion of the parts of a thing" .)