noun an unmarried woman.
2. bachelor ·noun a man of any age who has not been married.
3. bachelor ·noun a kind of bass, an edible fresh-water fish (pomoxys annularis) of the southern united states.
4. bachelor ·noun in the companies of london tradesmen, one not yet admitted to wear the livery; a junior member.
5. bachelor ·noun a knight who had no standard of his own, but fought under the standard of another in the field; often, a young knight.
6. bachelor ·noun a person who has taken the first or lowest degree in the liberal arts, or in some branch of science, at a college or university; as, a bachelor of arts.