seal

⁴seal

verb

Definition of SEAL

transitive verb

1

a : to confirm or make secure by or as if by a seal <seal the deal> b : to solemnize for eternity (as a marriage) 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>

First Known Use of SEAL

14th century