Doctor given advantage in search for oysters? (6)
I believe the answer is:
dredge
'search for oysters?' is the definition.
'dredge' can be an answer for 'search' (dredging is a kind of searching). I'm not sure about the 'for oysters?' bit.
'doctor given advantage' is the wordplay.
'doctor' becomes 'Dr' (synonyms).
'given' is a charade indicator (letters next to each other).
'advantage' becomes 'edge' (edge is a kind of advantage).
'dr'+'edge'='DREDGE'
'in' is the link.
Can you help me to learn more?
(Other definitions for dredge that I've seen before include "Clear out (a waterway)" , "Clean out the bed of a river or harbour" , "Remove earth from under water" , "River-bed clearer" , "Sort of collector" .)