- 1[countable] a plane driven by jet engines a jet aircraft/fighter/airliner The accident happened as the jet was about to take off. see jumbo (jet), jump jet
- 2[countable] a strong narrow stream of gas, liquid, steam, or flame that comes very quickly out of a small opening. The opening is also called a jet The pipe burst and jets of water shot across the room. to clean the gas jets on the stove
- 3[uncountable] a hard black mineral that can be polished and is used in jewelry jet beads
Check pronunciation: jet