I give a hand that's perfect (5)
I believe the answer is:
ideal
'perfect' is the definition.
(similar in meaning)
'i give a hand' is the wordplay.
'give a hand' becomes 'deal' (I've seen this in another clue).
'i'+'deal'='IDEAL'
'that's' is the link.
(Other definitions for ideal that I've seen before include "Exemplar" , "fanciful" , "Perfect; visionary" , "Conceptual" , "Ultimate standard of perfection" .)