|Origin:||Old English seolh|
|Origin:||seel, from Latin sigillum, from signum; SIGN1|
seal1 S3 [countable]
a large sea animal that eats fish and lives around coasts
a mark that has a special design and shows the legal or official authority of a person or organization:
The document carried the seal of the governor's office.
the object that is used to make this mark
a piece of rubber or plastic that keeps air, water, dirt etc out of something
an airtight seal around the windows
a piece of wax, paper, wire etc that you have to break in order to open a container, document etc
if you give something your seal of approval, you say that you approve of it, especially officially:
A number of employers have already given their seal of approval to the scheme.
6 British English
to make something definite or complete:
In 1972, Nixon himself went to China to set the seal on the new relationship.