Definitions of seal

  1. To set or affix a seal to; hence, to authenticate; to confirm; to ratify; to establish; as, to seal a deed.
  2. To mark with a stamp, as an evidence of standard exactness, legal size, or merchantable quality; as, to seal weights and measures; to seal silverware.
  3. To fasten with a seal; to attach together with a wafer, wax, or other substance causing adhesion; as, to seal a letter.
  4. Hence, to shut close; to keep close; to make fast; to keep secure or secret.
  5. To fix, as a piece of iron in a wall, with cement, plaster, or the like.
  6. To close by means of a seal; as, to seal a drainpipe with water. See 2d Seal, 5.
  7. Among the Mormons, to confirm or set apart as a second or additional wife.
  8. To fasten with a device so that it cannot be tampered with; as, to seal a letter; set or affix a seal to; ratify or confirm; secure or give guaranty for; keep secure or secret; settle beyond question: as, to seal his fate.
  9. To fasten with a seal: to set a seal to: to mark with a stamp: to make fast: to confirm: to keep secure.
  10. To fix a seal to; fasten with a seal or with any plastic substance; confirm.
  11. To fasten with a seal; put a seal upon; close tightly; keep secret; confirm.
  12. To affix one's seal, or a seal.
  13. To hunt seals.
  14. To fix a seal. " Yes Shylook, I will seal unto this bond."- Shak.
  15. hunt seals
  16. cover with varnish
  17. To fasten with a seal; to set a seal to; to ratify or confirm; to shut close; to make fast; to mark with a stamp; to close; to inclose; to impress; to catch seals.
  18. To fasten with; to set or affix a seal to; to ratify; to make fast; to authenticate with a stamp; to enclose, hide, or conceal; to imprint on the mind.
  19. an indication of approved or superior status
  20. any of numerous marine mammals that come on shore to breed; chiefly of cold regions
  21. a device incised to make an impression; used to secure a closing or to authenticate documents
  22. fastener that provides a tight and perfect closure
  23. a finishing coat applied to exclude moisture
  24. fastener consisting of a resinous composition that is plastic when warm; used for sealing documents and parcels and letters
  25. a stamp affixed to a document ( as to attest to its authenticity or to seal it); " the warrant bore the sheriff's seal"
  26. the pelt or fur ( especially the underfur) of a seal; " a coat of seal"
  27. a member of a Naval Special Warfare unit who is trained for unconventional warfare; " SEAL is an acronym for Sea Air and Land"
  28. decide irrevocably; " sealing dooms"
  29. close with or as if with a seal; " She sealed the letter with hot wax"
  30. affix a seal to; " seal the letter"
  31. A compound hydraulic valve for regulating the passage of the gas through a set of purifiers so as to cut out each one in turn for the renewal of the lime.
  32. Any aquatic carnivorous mammal of the families Phocidae and Otariidae.
  33. An engraved or inscribed stamp, used for marking an impression in wax or other soft substance, to be attached to a document, or otherwise used by way of authentication or security.
  34. Wax, wafer, or other tenacious substance, set to an instrument, and impressed or stamped with a seal; as, to give a deed under hand and seal.
  35. That which seals or fastens; esp., the wax or wafer placed on a letter or other closed paper, etc., to fasten it.
  36. That which confirms, ratifies, or makes stable; that which authenticates; that which secures; assurance.
  37. An arrangement for preventing the entrance or return of gas or air into a pipe, by which the open end of the pipe dips beneath the surface of water or other liquid, or a deep bend or sag in the pipe is filled with the liquid; a draintrap.
  38. A flesh- eating sea animal valuable for its skin and oil; a stamp or die engraved with some device, used for making an impression in wax; wax or other soft substance fixed upon a letter, document, etc., and marked with such a stamp; any act that approves or confirms; a device, as stamped wax, used for securing an envelope, etc.; hence, that which fastens.
  39. An engraved stamp for impressing the wax which closes a letter, etc.: the wax or other substance so impressed: that which makes fast or secure: that which authenticates or ratifies: assurance.
  40. A marine animal valuable for its skin and oil.
  41. A marine carnivorous animal; stamp for impressing wax, & c.; impression of a seal; that which secures or authenticates.
  42. Anything that authenticates; a pledge; guaranty.
  43. An aquatic carnivorous mammal of high latitudes, yielding valuable fur.
  44. An aquatic carnivorous mammal, valuable for its skin and oil.
  45. A stamp or die, engraved with some image or device, or its impression; the wax set to an instrument, and stamped with a seal; the wax that fastens a letter; any act of confirmation; that which confirms or ratifies; that which makes fast.
  46. A marine amphibious animal of various species, chiefly inhabiting the sea- coasts of the higher latitudes, much sought after for its skin and oil; the sea- calf; the sea- dog.
  47. An engraved or inscribed piece of metal; a precious stone, a pebble, or a piece of metal, on which some image or device is engraved, used for impressing the wax that closes a letter, or that which is attached to a deed or other parchment or writing; that which ratifies or confirms; an act of confirmation; that which shuts or makes fast.