Involving, done, or operated by only one person.

(heraldry, chiefly of a peacock) With its tail feathers spread.

If not older; at least.

(baseball, slang) To make a mistake.

Achieved by the operation of one's personal strengths and merits.

Obsolete form of one another's.

(idiomatic, slang, African-American Vernacular) A warning to an individual who has greatly offended one's dignity or has acted or spoken insolently.

Done by (someone).

(idiomatic, slang, euphemistic) Menstruating.

(seismology, colloquial, usually with the) A hypothetical massive earthquake somewhere along the Pacific coast of North America, but especially one projected to cause catastrophic damage to a major city such as Vancouver, Seattle, San Francisco, or Los Angeles.