Bedeutung von “seal” — Learner’s Dictionary

seal

verb [ T ] us uk /siːl/
CLOSE ENTRANCE also seal up

to close an entrance or container so that air or liquid cannot enter or leave it:

She quickly sealed up the bottle.
CLOSE LETTER

to close a letter or parcel by sticking the edges together:

to seal an envelope

See also

(Definition von “seal verb” aus dem Cambridge Learner's Dictionary © Cambridge University Press)