Box in Rhodes (3)
I believe the answer is:
hod
'box' is the definition.
(hod is a kind of box)
'in rhodes' is the wordplay.
'in' indicates the answer is hidden within the clue.
'HOD' is hidden within 'rhodes'.
(Other definitions for hod that I've seen before include "Trough on pole used by bricklayer to carry things" , "V-shaped box on a pole for bricks" , "Bricklayer uses it for carrying" , "Brick carrier of shoddy type" , "Brick-carrier's holder" .)