Snack I developed that some swimmers use to their advantage? (3-3)
I believe the answer is:
ink-sac
'some swimmers use to their advantage?' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'snack i developed' is the wordplay.
'developed' is an anagram indicator.
'snack'+'i'='snacki'
'snacki' with letters rearranged gives 'INK-SAC'.
'that' acts as a link.
Can you help me to learn more?
(Other definitions for ink-sac that I've seen before include "Enthusiastic; lament" , "Cuttlefish's bag for sepia" .)