Definition

proper name
(born Abigail Smith) 1744-1818: wife of John Adams.
Webster's New World
1902-84; U.S. photographer.
Webster's New World
1807-86; U.S. statesman: son of John Quincy.
Webster's New World
1838-1918; U.S. historian & writer: son of Charles Francis.
Webster's New World
1735-1826; 2d president of the U.S. (1797-1801)
Webster's New World
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pronoun

A patronymic surname​ derived from Adam.

Wiktionary

Plural form of Adam.

Wiktionary