Green OBE? (5)
I believe the answer is:
olive
'green' is the definition.
(I know that olive is a type of green)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for olive that I've seen before include "shades of green" , "Oil producer" , "Oil-producing fruit" , "This branch is offered in peace gesture" , "Female" .)