Cashew or pecan, eg (3)
I believe the answer is:
nut
I believe this clue is a double definition.
'cashew' is the first definition.
(I've seen this in another clue)
'pecan eg' is the second definition.
(pecan is a kind of nut)
(Other definitions for nut that I've seen before include "Brazil, for instance" , "Hard shell of a locking device" , "Large, hard-shelled seed" , "Bolt securer" , "One securing bolt" .)