Beat and not beet? (4)
I believe the answer is:
cane
I believe this is a double definition.
'beat' is the first definition.
(caning is a kind of beating)
'not beet?' is the second definition.
(I've seen this before)
'and' acts as a link.
(Other definitions for cane that I've seen before include "Slender support, for 32 across say" , "A slender wooden rod for weaving" , "Rod for beating" , "Bamboo, sugar, stem" , "Type of sugar; beat" .)