Harold with hollow vegetable to cut in two (5)
I believe the answer is:
halve
'cut in two' is the definition.
(I've seen this in another clue)
'harold with hollow vegetable' is the wordplay.
'harold with' becomes 'hal' (I can't justify this - if you can you should give a lot more credence to this answer).
'hollow' suggests removing the centre.
'vegetable' with its middle removed is 've'.
'hal'+'ve'='HALVE'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for halve that I've seen before include "Divide into two equal pieces" , "Bisect" , "split 50/50" , "Share equally" , "Divide into two equal parts" .)