Staff turn tropical fruit (5)
I believe the answer is:
mango
'tropical fruit' is the definition.
(I've seen this before)
'staff turn' is the wordplay.
'staff' becomes 'man' (manning is a kind of staffing).
'turn' becomes 'go' (a person's move in a board game).
'man'+'go'='MANGO'
(Other definitions for mango that I've seen before include "No, Mag has the odd fruit" , "product" , "Fleshy tropical fruit" , "Fruit, often in chutney" , "Once exotic fruit" .)