The making and launching of rockets, its science and practice.

Surrounded by rocks. / (CB radio slang) Limited in frequency because of a limited supply of crystals.

A rocket engine, especially a solid rocket or a hybrid rocket.

A reaction engine that obtains thrust by jet propulsion which forms its jet exclusively from propellant.

(geography) A range of mountains running from Northern New Mexico to Alaska.

(medicine) Rocky Mountain spotted fever

(malapropism) Barmy; crazy; insane.

(Canada, slang) Any of the red-painted electrical streetcars and subway trams operated by the Toronto Transit Commission in Toronto, Canada, especially the classic models used during the early and mid-20th century.

A festival at which rockets are set off, especially as celebrated in Laos and north-east Thailand to welcome the start of the rainy season.

plural of rockbun