Aphrodisiac supposedly taken by schoolboys? Terrific! (6)
I believe the answer is:
oyster
'aphrodisiac' is the definition.
(oysters are supposedly aphrodisiacs)
'taken by schoolboys? terrific' is the wordplay.
'taken by' indicates the answer is hidden within the clue.
'OYSTER' is hidden in the letters of 'schoolboys terrific'.
'supposedly' acts as a link.
This may not be right. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for oyster that I've seen before include "Capital card" , "Content of stew" , "Type of mollusc" , "Pearl-yielding shellfish" , "offers all one could desire" .)