Low in height; short.

Low in place or position.

Of low value or degree.

Of low social standing or rank; vulgar, common.

Morally reprehensible, immoral; cowardly.

Inferior; unworthy, of poor quality.

Designating those metals which are not classed as precious or noble.

Alloyed with inferior metal; debased.

"base bullion"

Of illegitimate birth; bastard.

Not classical or correct.

"base Latin"

Not held by honourable service.

"A base estate is one held by services not honourable, or held by villenage. Such a tenure is called base, or low, and the tenant is a base tenant."

Of sound, a voice or an instrument, low in pitch or frequency.

"The giant spoke in a deep, bass, rumbling voice that shook me to my boots."