Sailed around lake being stuffed (7)
I believe the answer is:
bloated
'being stuffed' is the definition.
(thesaurus)
'sailed around lake' is the wordplay.
'sailed' becomes 'boated' (I've seen this in another clue).
'around' indicates putting letters inside.
'lake' becomes 'L' (geographical abbreviation).
'boated' placed around 'l' is 'BLOATED'.
(Other definitions for bloated that I've seen before include "Distended" , "Swollen with gas, liquid or pride" , "Swollen with fluid or gas" , "Puffed out" , "More than fed up" .)