Luau accessory (3)
I believe the answer is:
lei
'luau accessory' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for lei that I've seen before include "Flowers worn round the neck" , "Flower arrangements" , "Polynesian garland of flowers" , "Honolulu chain of flowers" , "Garland of flowers, may accompany 5 Down" .)