(music) a suspension that consists of the ninth chord tone that resolves to the eighth (or the one).

(Canada, US, metonymically) Emergency services; emergency service personnel. / (Canada, US, colloquial, metonymically) An emergency phone call. / (Canada, US, colloquial, metonymically) An emergency.

(automotive) A prominent family of sports cars manufactured by Porsche.

The telephone number for emergency services in the United States, Canada, Mexico, Belize, Costa Rica, Argentina, Uruguay, Ecuador, Saudi Arabia, Egypt, Jordan, Liberia, Ethiopia, the Philippines, Anguilla, Palau, and Tonga.

(Canada, US, colloquial) To call emergency services.

A romanticized vision of the 1890s; compare with roaring 20s. / (derogatory) The 1990s, perceived as mediocre in comparison.

(sports) The act of spinning 900 degrees in the air, doing two and a half complete turns.

Clipping of 1-900.

(Thelema) A numerological abbreviation of the phrase "do what thou wilt shall be the whole of the law"; used as a greeting.

The 96 victims of the Hillsborough disaster.