A cost estimate, or a proposal to buy something, the value of which is kept secret from competitors until all such bids have been made.

The personal seal of a English or Scottish monarch. / A document to which such a seal is attached; specifically, a warrant demanding a loan. / The position of Keeper of the Privy Seal.

A measured amount of radioisotope sealed within a protective container.

The public seal of a nation, especially the British Great Seal of the Realm; supreme authority.

Pusa hispida, an earless seal inhabiting Arctic and subarctic coasts.

A mystic symbol in the form of a hexagram. / Any flowering plant of the genus Polygonatum.

Large marine mammals of the genus Mirounga, the largest of the pinnipeds.

A marine mammal of either of the genera Arctocephalus or Callorhinus of the eared seal family Otariidae, differing from the sea lions in having dense underfur.

A dark brown area of fur on the ears, face, legs, and tail of a Siamese cat. / A cat that has such a marking.

(transitive) To enclose (something) in plastic wrapping and make an airtight seal by applying heat to fuse the edges of the wrapping together.