- seal
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[[t]sil[/t]]n.1) an embossed emblem, symbol, letter, etc., used as attestation or evidence of authenticity2) a stamp, medallion, ring, etc., engraved with such a device, for impressing paper, wax, lead, or the like3) the impression so obtained4) an authenticating mark or symbol, orig. wax with an impression, attached to a legal document5) a piece of wax or similar adhesive affixed to a document, envelope, door, etc., that must be broken when the object is opened6) anything that tightly or completely closes or secures a thing7) something that keeps a thing secret:Her vow was the seal that kept her silent[/ex]8) phi a stamplike label, esp. as given to contributors to a charity:a Christmas seal[/ex]9) a mark, sign, symbol, or the like, serving as visible evidence of something10) anything that serves as assurance, confirmation, or bond:She gave the plan her seal of approval[/ex]11) bui Plumbing.a small amount of water held by a trap to exclude foul gases from a sewer or the like12) to affix a seal to in authorization, testimony, etc13) to assure, confirm, or bind with or as if with a seal14) to impress a seal upon as evidence of legal or standard exactness, measure, quality, etc15) to close with a fastening that must be broken to gain access16) to fasten or close tightly by or as if by a seal17) to decide irrevocably:to seal someone's fate[/ex]18) cvb phv seal offa) to close hermeticallyb) to block all access to or from, with a police barricade•Etymology: 1175–1225; ME seel, seil(e), seale mark, token < OF seel < LL *sigellum, L sigillum IIseal[[t]sil[/t]] n. pl. seals, (esp. collectively for1)seal,1) mam any of numerous marine carnivores of the order Pinnipedia, including the eared seals of the family Otariidae and the earless seals of the family Phocidae2) the skin of such an animal3) clo leather made from this skin4) clo the fur of the fur seal; sealskin5) a dark gray-brown6) to hunt, kill, or capture seals•Etymology: bef. 900; ME sele, OE seolh, c. OHGselah, ON selr seal′like`, adj.
From formal English to slang. 2014.