Thin, willowy (7)
I believe the answer is:
slender
I believe this is a double definition.
'thin' is the first definition.
(I know that thin can be written as slender)
'willowy' is the second definition.
(I've seen this before)
(Other definitions for slender that I've seen before include "Barely sufficient (means)" , "remote" , "Shakespearean character" , "Meagre" , "Faint" .)