Flowers in sleigh (3)
I believe the answer is:
lei
'flowers' is the definition.
(a Hawaiian wreath of flowers)
'in sleigh' is the wordplay.
'in' indicates a hidden word.
'LEI' can be found hidden inside 'sleigh'.
(Other definitions for lei that I've seen before include "Hawaiian garland of flowers" , "What Romanians spend" , "Hawaiin flower garland" , "Hawaiian ring of flowers" , "Band of flowers" .)