They're before your very eyes! (5)
I believe the answer is:
clues
'eyes' is the definition.
Although both the answer and definition are verbs in their -s form, I cannot understand how one could define the other.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for clues that I've seen before include "Indications" , "Hints (that you're looking at?)" , "Here, they're across and down" , "Crossword aids" .)