Meaning of SEAL in English

SEAL

/ siːl; NAmE / verb , noun

■ verb

[ vn ]

CLOSE ENVELOPE

1.

seal sth (up / down) to close an envelope, etc. by sticking the edges of the opening together :

Make sure you've signed the cheque before sealing the envelope.

a sealed bid (= one that is kept in a sealed envelope and therefore remains secret until all other bids have been received)

CLOSE CONTAINER

2.

[ often passive ] seal sth (up) (with sth) to close a container tightly or fill a crack, etc., especially so that air, liquid, etc. cannot get in or out :

The organs are kept in sealed plastic bags.

COVER SURFACE

3.

[ often passive ] seal sth (with sth) to cover the surface of sth with a substance in order to protect it :

The floors had been stripped and sealed with varnish.

MAKE STH DEFINITE

4.

to make sth definite, so that it cannot be changed or argued about :

to seal a contract

They drank a glass of wine to seal their new friendship.

The discovery of new evidence sealed his fate (= nothing could prevent what was going to happen to him) .

CLOSE BORDERS / EXITS

5.

( of the police, army, etc. ) to prevent people from passing through a place :

Troops have sealed the borders between the countries.

IDIOMS

see lip , sign verb

PHRASAL VERBS

- seal sth in

- seal sth in sth

- seal sth off

■ noun

OFFICIAL MARK

1.

[ C ] an official design or mark, stamped on a document to show that it is genuine and carries the authority of a particular person or organization :

The letter bore the president's seal.

MAKING STH DEFINITE

2.

[ sing. ] a thing that makes sth definite :

The project has been given the government's seal of approval (= official approval) .

I looked upon the gift as a seal on our friendship.

ON CONTAINERS

3.

[ C ] a substance, strip of material, etc. used to fill a crack so that air, liquid, etc. cannot get in or out :

a jar with a rubber seal in the lid

Only drink bottled water and check the seal isn't broken.

ON LETTERS / BOXES

4.

[ C ] a piece of wax (= a soft substance produced by bees ), soft metal or paper that is placed across the opening of sth such as a letter or box and which has to be broken before the letter or box can be opened :

He broke the wax seal and unrolled the paper.

5.

a piece of metal, a ring, etc. with a design on it, used for stamping a wax or metal seal

SEA ANIMAL

6.

[ C ] a sea animal that eats fish and lives around coasts. There are many types of seal, some of which are hunted for their fur :

a colony of seals

grey seals basking on the rocks

IDIOMS

- set the seal on sth

- under seal

••

WORD ORIGIN

noun senses 2 to 6 and verb Middle English (in senses 2, 5 and 6): from Old French seel (noun), seeler (verb), from Latin sigillum small picture, diminutive of signum a sign.

noun sense 1 Old English seolh , of Germanic origin.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.