Flowers from sleigh (3)
I believe the answer is:
lei
'flowers' is the definition.
(a Hawaiian wreath of flowers)
'from sleigh' is the wordplay.
'from' says the answer is hidden in the clue.
'LEI' is hidden in the letters of 'sleigh'.
(Other definitions for lei that I've seen before include "Flowers worn round the neck" , "ready in Romania" , "Blooming string" , "Polynesian garland of flowers" , "Floral garland" .)