1. an embossed emblem, figure, symbol, word, letter, etc., used as attestation or evidence of authenticity:Without the seal, the certificate is useless.
2. a stamp, medallion, ring, etc., engraved with such a device, for impressing paper, wax, lead, or the like: The king took the seal from his finger and applied it to the document.
3. the impression so obtained: It was unmistakably the royal seal on the document.
4. a mark or symbol attached to a legal document and imparting a formal character to it, originally wax with an impression:Part of his job was stamping the lawyer's seal next to each of her signatures.
5. a piece of wax or similar adhesive substance so attached to an envelope, folded document, etc., that it must be broken when the object is opened, insuring that the contents have not been tampered with or altered.
6. anything that tightly or completely closes or secures a thing, as closures or fastenings for doors and railroad cars, adhesive stamps and tapes used to secure the flap of an envelope, etc.
7. something that keeps a thing secret: Her vow was the seal that kept her silent.
8. a decorative stamp, especially as given to contributors to a charitable fund: a Christmas seal.
9. a mark, sign, symbol, or the like, serving as visible evidence of something.
10. anything that serves as assurance, confirmation, or bond: She gave the plan her seal of approval.
11. Plumbing.
• a small amount of water held by a trap to exclude foul gases from a sewer or the like.
• the depth of the part of the water that actually excludes the gases.
12. the tokens or signs of public office.

13. to affix a seal to in authorization, testimony, etc.
14. to assure, confirm, or bind with or as if with a seal:They sealed the bargain with a handshake.
15. to impress a seal upon as evidence of legal or standard exactness, measure, quality, etc.
16. to close by any form of fastening that must be broken before access can be gained.
17. to fasten or close tightly by or as if by a seal: She was sealing envelopes. My lips are sealed.
18. to decide irrevocably: to seal someone's fate.
19. to grant under one's seal or authority, as a pardon.
20. to make (a marriage or adoption) forever binding; solemnize.
21. to bring (a plug and jack or socket) into locked or fully aligned position.

22. seal off,
• to close hermetically: to seal off a jar.
• to block (an entrance, area, etc.) completely so as to prevent escape or entrance: The police sealed off the area after the bomb threat was received.

23. to give one's approval to; authorize; endorse: Both families have set their seal to the marriage.
24. See entry at seal the deal.

1. any of numerous marine carnivores of the suborder Pinnipedia, including the eared or fur seals, as the sea lion, and the earless or hair seals, as the harbor seal.
2. the skin of such an animal.
3. leather made from this skin.
4. the fur of the fur seal; sealskin.
5. a fur used as a substitute for sealskin.
6. a dark, gray brown.

7. to hunt, kill, or capture seals.

1. seel (def. 1).

1. a member of the U.S. Navy’s special operations forces.

1. a device impressed on a piece of wax, moist clay, etc, fixed to a letter, document, etc, as a mark of authentication
2. a stamp, ring, etc, engraved with a device to form such an impression
3. a substance, esp wax, so placed over an envelope, document, etc, that it must be broken before the object can be opened or used
4. any substance or device used to close or fasten tightly
5. a material, such as putty or cement, that is used to close an opening to prevent the passage of air, water, etc
6. a small amount of water contained in the trap of a drain to prevent the passage of foul smells
7. an agent or device for keeping something hidden or secret
8. anything that gives a pledge or confirmation
9. a decorative stamp often sold in aid of charity
10. the obligation never to reveal anything said by a penitent in confession
11. set one's seal on or set one's seal to
• to mark with one's sign or seal
• to endorse

12. to affix a seal to, as proof of authenticity
13. to stamp with or as if with a seal
14. to approve or authorize
15. to close or secure with or as if with a seal
16. to enclose (a place) with a fence, wall, etc
17. to decide irrevocably
18. to make (a marriage or adoption) perpetually binding
19. to subject (the outside of meat, etc) to fierce heat so as to retain the juices during cooking
20. to close tightly so as to render airtight or watertight
21. to paint (a porous material) with a nonporous coating
22. to consolidate (a road surface) with bitumen, tar, etc

1. any pinniped mammal of the families Otariidae (eared seals) and Phocidae (earless seals) that are aquatic but come on shore to breed
2. any earless seal (family Phocidae), esp the common or harbour seal or the grey seal (Halichoerus grypus)
3. sealskin

4. to hunt for seals

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