Stopped up (6)
I believe the answer is:
sealed
(Other definitions for sealed that I've seen before include "Stamped as authentic" , "Closed tightly, maybe with wax" , "Shut up tight" , "Secured against leakage" , "Fastened as in S.W.A.L.K." .)
I believe the answer is:
sealed
(Other definitions for sealed that I've seen before include "Stamped as authentic" , "Closed tightly, maybe with wax" , "Shut up tight" , "Secured against leakage" , "Fastened as in S.W.A.L.K." .)