Escargots (6)
I believe the answer is:
snails
'escargots' is the definition.
('snail' can be a synonym of 'escargot')
This is all the clue.
(Other definitions for snails that I've seen before include "oath" , "Slugs with shells" , "Soft-bodied animals with spiral shells, common in garden" , "'To the French, they're escargots (6)'" , "Slow-moving slugs" .)