Abandon at the beach (6)
I believe the answer is:
strand
This clue is a double definition.
'abandon' is the first definition.
(stranding is a kind of abandoning)
'the beach' is the second definition.
(beach can mean to become stranded on a beach)
'at' acts as a link.
(Other definitions for strand that I've seen before include "Maroon - thread" , "Abandon on the seashore" , "Thread - London street" , "Run aground, beach" , "Maroon - filament" .)