Can it divide an onion? (7)
I believe the answer is:
shallot
'onion?' is the definition.
(I know that shallot is a type of onion)
'can it divide' is the wordplay.
'can it' becomes 'sh' ('can it' can mean stop talking or be quiet).
'divide' becomes 'allot' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'sh'+'allot'='SHALLOT'
'an' is the link.
Can you help me to learn more?
(Other definitions for shallot that I've seen before include "Scallion" , "Species of onion" , "Rowing boat" , "Type of onion" , "Host all with kind of onion" .)