Very noticeable (3-8)
I believe the answer is:
eye-catching
'very noticeable' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for eye-catching that I've seen before include "Seizing one's attention" , "Immediately appealing or noticeable" , "Conspicuous" , "Standing out" , "Striking" .)