Alternative form of triple O

(Australia) Phonetic rendition of Australia′s emergency services telephone number, 000.

(US) A one-on-one.

A three-pointed decorative amulet, of bronze or jade, found throughout Southeast Asia

(insurance) Errors and omissions insurance.

(insurance) Abbreviation of directors and officers.

A subject-based qualification superseded in England by GCSEs, but still available as an international examination.

Alternative spelling of O-level

Alternative form of will-o'-the-wisp

(Indo-European linguistics) In Proto-Indo-European linguistics, an ablaut form of a Proto-Indo-European root, characterised by the presence of the */o/ vowel phoneme in place of */e/.