This plant is an aubergine (3)
I believe the answer is:
egg
This might be a double definition.
'this plant' is the first definition.
The answer and definition can be both to do with contact as well as being verbs in their base form.
Maybe there's an association between them I don't understand?
'an aubergine' is the second definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Maybe there's an association between them I don't understand?
'is' is the link.
Can you help me to learn more?
(Other definitions for egg that I've seen before include "Over-easy breakfast item?" , "Incite; ovum" , "Urge (someone on )" , "Easter hunt target" , "Hen's product" .)