Flower in hair I see (4)
I believe the answer is:
iris
'flower' is the definition.
(iris is a type of flower)
'in hair i see' is the wordplay.
'in' indicates a hidden word.
'IRIS' is hidden in the letters of 'hair i see'.
(Other definitions for iris that I've seen before include "Ms Murdoch" , "who keeps pupil in?" , "Flower and eye membrane" , "Flower - rainbow" , "Bright flower or eye part" .)