Gardner of "On the Beach” (3)
I believe the answer is:
ava
'gardner of on the beach' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ava that I've seen before include "girl" , "woman" , "- - Gardner (films)" , ". . . Gardner (film star)" , "-- Gardner, US actress" .)