It's grown for food in Nicosia (3)
I believe the answer is:
cos
'it's grown for food' is the definition.
I can't tell whether this defines the answer.
'in nicosia' is the wordplay.
'in' indicates the answer is hidden within the clue.
'COS' is hidden in the letters of 'nicosia'.
Can you help me to learn more?
(Other definitions for cos that I've seen before include "providing unsatisfactory explanation?" , "something of a salad" , "holiday destination" , "Islanders here" , "Kind of lettuce in microcosm" .)