Beer gets nothing from plant (4)
I believe the answer is:
aloe
'plant' is the definition.
The answer is an example.
'beer gets nothing' is the wordplay.
'beer' becomes 'ale' (type of beer).
'gets' indicates putting letters inside (gets can mean captures or absorbs).
'nothing' becomes 'O' (O resembles 0).
'ale' going around 'o' is 'ALOE'.
'from' acts as a link.
(Other definitions for aloe that I've seen before include "Fleshy-leaved plant" , "has a bitter taste" , "Plant source of purgative drug" , "O, ale with bitter plant" , "Succulent plant (may be bitter!)" .)