Please study this nymph (5)
I believe the answer is:
oread
'nymph' is the definition.
(I've seen this in another clue)
'please study' is the wordplay.
'please' becomes 'o' (form of address eg in an ode).
'study' becomes 'read' (synonyms).
'o'+'read'='OREAD'
'this' is the link.
(Other definitions for oread that I've seen before include "Maid of the Mountains" , "being in range?" , "mountainous girl" , "O dear, a strange mountain nymph" , "classically beautiful girl" .)