Anne's turned up with the tea! (5)
I believe the answer is:
senna
'the tea' is the definition.
The answer and definition can be both plants as well as being singular nouns.
Maybe you can see an association between them that I can't see?
'anne's turned up' is the wordplay.
'turned up' shows that the letters should be reversed in order.
'annes' written backwards gives 'SENNA'.
'with' is the link.
Can you help me to learn more?
(Other definitions for senna that I've seen before include "Plant with medicinal pods" , "Late driver" , "Natural laxative" , "Medicinal plant - racing driver, Ayrton" , "Laxative from pods" .)