Striking, say outside, you whip and punch (3-8)
I believe the answer is:
eye-catching
'striking' is the definition.
(both can mean attention-grabbing)
'outside you whip and punch' is the wordplay.
I cannot really see how this works, but
'you' could be 'ye' (historical version of 'you') and 'ye' is located in the answer.
'whip' could be 'cat' (cat o' nine tails, cat for short is a type of whip) and 'cat' is present in the answer.
'and' could be 'n' (common abbreviation for 'and') and 'n' is found in the answer.
This may be the basis of clue (or it may be nonsense).
'say' is the link.
Can you help me to learn more?
(Other definitions for eye-catching that I've seen before include "Striking" , "Attractive" , "Conspicuous" , "Seizing one's attention" , "Immediately appealing or noticeable" .)