generated at
seal
[*** \mathrm{seal}^1] | ˈsē(ə)l |

noun
1. a device or substance that is used to join two things together so as to prevent them from coming apart or to prevent anything from passing between them:
(水漏れなどを防ぐための)目張り, 目塗り材, 密封シール
e.g. blue smoke from the exhaust suggests worn valve seals.
in singular the state or fact of being joined or rendered impervious with a seal:
e.g. many fittings have tapered threads for a better seal.
the water standing in the trap of a drain to prevent sewer gas from backing up through the drain, considered in terms of its depth.
2. a piece of wax, lead, or other material with an individual design stamped into it, attached to a document to show that it has come from the person who claims to have issued it.
公印, 印章, 印鑑, 紋章
a design resembling a seal embossed in paper as a guarantee of authenticity.
3. a thing regarded as a confirmation or guarantee of something:
【是認・愛情などの】保証; しるし «of»
e.g. the International Monetary Fund is likely to give a seal of approval to the Mexican plan.
4. (the seal) (also the seal of confession or the seal of the confessional) the obligation on a priest not to divulge anything said during confession:
人の口を封じるもの, 口止め.
e.g. I was told under the seal.

verb with object
…に封をする, 〈手紙・文書など〉を封印する(up, down)(↔ unseal)
e.g. he folded it, sealed the envelope, and walked to the mailbox.
(seal something in) prevent something from escaping by closing a container or opening.
«…で» 〈容器・入口・割れ目など〉を密封, 密閉する, ふさぐ(up) «with» (!しばしば受け身で)
(seal something off) isolate an area by preventing or monitoring entrance to and exit from it:
(危険なので)〈場所〉を封鎖する(off)
e.g. the police have sealed off the area in search of the attackers.
2. apply a nonporous coating to (a surface) to make it impervious:
e.g. seal the finish with a satin varnish.
3. fry (food) briefly in hot fat to prevent it from losing too much of its moisture during subsequent cooking:
e.g. heat the oil and seal the lamb on both sides.
4. conclude, establish, or secure (something) definitively, excluding the possibility of reversal or loss:
⦅書⦆ 〈事〉を決定的, 確実なものにする; 〈運命など〉を決定する; 〈取引など〉を確認する
e.g. to seal the deal he offered Thornton a place on the board of the nascent company.
5. fix a piece of wax or lead stamped with a design to (a document) to authenticate it.
…に判を押す, 押印する

PHRASES
my (or his etc.) lips are sealed
used to convey that one will not discuss or reveal something.

put (or set) the seal on
give the final authorization to: the UN envoy hopes to set the seal on a lasting peace.
provide or constitute the final confirmatory or conclusive factor: the rain set the seal on his depression.

see fate.

set (or put) one's seal to (or on)
mark with one's distinctive character: it was the Stewart dynasty which most markedly set its seal on the place.

under legal protection of secrecy: the judge ordered that the videotape be kept under seal.

DERIVATIVES
sealable adjective

ORIGIN
Middle English (in seal1 (sense 2 of the noun) ): from Old French seel (noun), seeler (verb), from Latin sigillumsmall picture’, diminutive of signum ‘a sign’.

[*** \mathrm{seal}^2] | ˈsē(ə)l |

noun
a fish-eating aquatic mammal with a streamlined body and feet developed as flippers, returning to land to breed or rest.
>Families Phocidae (the true seals) and Otariidae (the eared seals, including the fur seals and sea lions). The latter have external ear flaps and are able to sit upright, and the males are much larger than the females.
〘動〙 アザラシ(類)〘アザラシ・アシカ・オットセイなどの総称〙
another term for sealskin.

verb no object (usually as noun sealing)
hunt for seals.
アザラシ狩りをする.

ORIGIN