A poor actor with nothing wandering around beach (5)
I believe the answer is:
omaha
'beach' is the definition.
(I know that Omaha is a beach)
'a poor actor with nothing wandering around' is the wordplay.
'poor actor' becomes 'ham' (ham can mean a bad or over-the-top actor).
'with' says to put letters next to each other.
'nothing' becomes 'O' (looks like zero - 0).
'wandering around' shows that the letters should be reversed in order.
'a'+'ham'+'o'='ahamo'
'ahamo' backwards is 'OMAHA'.
(Other definitions for omaha that I've seen before include "American Indian" , "Cotton fabric used for curtains and upholstery" , "Nebraska's largest city" , "place in Nebraska" , "American-Indians" .)