Webster dictionary was developed by Noah Webster in the beginning of 19th century. On this website, you can find definition for seal from the 1913 edition of Webster's Revised Unabridged Dictionary. Define seal using one of the most comprehensive free online dictionaries on the web.

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seal
Part of Speech: noun
Results: 15
1. Any aquatic carnivorous mammal of the families Phocidae and Otariidae.
3. 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.
4. That which seals or fastens; esp., the wax or wafer placed on a letter or other closed paper, etc., to fasten it.
5. That which confirms, ratifies, or makes stable; that which authenticates; that which secures; assurance.
Part of Speech: verb
1. To affix one's seal, or a seal.
Part of Speech: verb transitive
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.
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.
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