Derivative of root אחד — canonical: H258 אָחַד (5 family members).

A cardinal numeral meaning 'one', indicating singularity, unity, or individual identity; used for counting, for emphasizing uniqueness or incomparability, for expressing 'each' or 'any one' within a group, and for describing unity or wholeness in both abstract and concrete senses. In construct forms or idioms, may denote 'first' or 'a certain (one)'.