| Noun | 1. | jet - an airplane powered by one or more jet engines Synonyms: jet plane, jet-propelled plane |
| 2. | jet - the occurrence of a sudden discharge (as of liquid) | |
| 3. | jet - a hard black form of lignite that takes a brilliant polish and is used in jewellery or ornamentation | |
| 4. | jet - street names for ketamine | |
| 5. | jet - an artificially produced flow of water Synonyms: fountain | |
| Verb | 1. | jet - issue in a jet; come out in a jet; stream or spring forth; "Water jetted forth"; "flames were jetting out of the building" Synonyms: gush |
| 2. | jet - fly a jet plane | |
| Adj. | 1. | jet - of the blackest black; similar to the color of jet or coal |