Of a living being, having lived for most of the expected years. / Of a perishable item, having existed for most of, or more than, its shelf life. / Having been used and thus no longer new or unused.

(with the, invariable plural only) People who are old; old beings; the older generation, taken as a group. / (slang) A person older than oneself, especially an adult in relation to a teenager.

(social work, slang) A person aged 75 or older.

plural of old-old

(Since) long ago; in ancient times.

Pronunciation spelling of hold.

(publishing, linguistics) Initialism of Oxford Latin Dictionary.

(Internet) Abbreviation of online dating.

plural of oldness

Archaic spelling of old.