17. seal to fasten or close tightly by or as if by a seal.
18. seal to decide irrevocably: to seal someone's fate.
19. seal seal off,
20. seal to close hermetically.
21. seal to block all access to or from, with a police barricade.
22. (n.)seal any of numerous marine carnivores of the order Pinnipedia, including the eared seals of the family Otariidae and the earless seals of the familyPhocidae.
2. (noun)seal an engraved or inscribed stamp, used for marking an impression in wax or other soft substance, to be attached to a document, or otherwise used by way of authentication or security
3. (noun)seal wax, wafer, or other tenacious substance, set to an instrument, and impressed or stamped with a seal; as, to give a deed under hand and seal
4. (noun)seal that which seals or fastens; esp., the wax or wafer placed on a letter or other closed paper, etc., to fasten it
5. (noun)seal that which confirms, ratifies, or makes stable; that which authenticates; that which secures; assurance
6. (noun)seal an arrangement for preventing the entrance or return of gas or air into a pipe, by which the open end of the pipe dips beneath the surface of water or other liquid, or a deepbend or sag in the pipe is filled with the liquid; a draintrap
7. (verb)seal to set or affix a seal to; hence, to authenticate; to confirm; to ratify; to establish; as, to seal a deed
8. (verb)seal to mark with a stamp, as an evidence of standard exactness, legal size, or merchantable quality; as, to seal weights and measures; to sealsilverware
9. (verb)seal to fasten with a seal; to attach together with a wafer, wax, or other substancecausing adhesion; as, to seal a letter
10. (verb)seal hence, to shut close; to keep close; to make fast; to keep secure or secret
11. (verb)seal to fix, as a piece of iron in a wall, with cement, plaster, or the like