plural seals also seal
1
: any of numerous carnivorous marine mammals (families Phocidae and Otariidae) that live chiefly in cold regions and have limbs modified into webbed flippers adapted primarily to swimming
especially
: a fur seal or hair seal as opposed to a sea lion
2
a
: the pelt of a fur seal
b
: leather made from the skin of a seal
3
: a dark brown
1
b(1)
: a device with a cut or raised emblem, symbol, or word used especially to certify a signature or authenticate a document
(2)
: a medallion or ring face bearing such a device incised so that it can be impressed on wax or moist clay
also
: a piece of wax or a wafer bearing such an impression
c
: an impression, device, or mark given the effect of a common-law seal by statute law or by American local custom recognized by judicial decision
d
: a usually ornamental adhesive stamp that may be used to close a letter or package
especially
: one given in a fund-raising campaign
2
a
: something that secures (such as a wax seal on a document)
b
: a closure that must be broken to be opened and that thus reveals tampering
c(1)
: a tight and perfect closure (as against the passage of gas or water)
(2)
: a device to prevent the passage or return of gas or air into a pipe or container
3
: a seal that is a symbol or mark of office
sealed; sealing; seals
1
a
: to confirm or make secure by or as if by a seal
seal the deal
b
: to solemnize (something, such as a marriage) for eternity by a Mormon rite
2
a
: to set or affix an authenticating seal to
also
: authenticate, ratify
b
: to mark with a stamp or seal usually as an evidence of standard exactness, legal size, weight, or capacity, or merchantable quality
3
a
: to fasten with or as if with a seal to prevent tampering
b
: to close or make secure against access, leakage, or passage by a fastening or coating
c
: to fix in position or close breaks in with a filling (as of plaster)
4
: to determine irrevocably or indisputably
that answer sealed our fate
sea, air, land (team)
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Merriam-Webster unabridged
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