Provide French article over there (3,2)
I believe the answer is:
'provide' is the definition.
(I've seen this before)
'french article over there' is the wordplay.
'french article' becomes 'la' (definite article in French).
'over there' becomes 'yon' (archaic word meaning 'over there').
(Other definitions for lay on that I've seen before include "Provide (something)" , "Provide (food, etc)" , "instruction for Macduff" .)