Member of an elite force (4)
I believe the answer is:
seal
(Other definitions for seal that I've seen before include "Amphibious mammal or stamp of authenticity" , "Stamp of approval" , "Signet" , "Authorise - plug" , "Stick down" .)
I believe the answer is:
seal
(Other definitions for seal that I've seen before include "Amphibious mammal or stamp of authenticity" , "Stamp of approval" , "Signet" , "Authorise - plug" , "Stick down" .)