| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a chattering or flighty, light-headed person. |
pilot (ˈpaɪlət) ![]() | |
| —n | |
| 1. | a. a person who is qualified to operate an aircraft or spacecraft in flight |
| b. (as modifier): pilot error | |
| 2. | a. a person who is qualified to steer or guide a ship into or out of a port, river mouth, etc |
| b. (as modifier): a pilot ship | |
| 3. | a person who steers a ship |
| 4. | a person who acts as a leader or guide |
| 5. | machinery a guide, often consisting of a tongue or dowel, used to assist in joining two mating parts together |
| 6. | machinery a plug gauge for measuring an internal diameter |
| 7. | films a colour test strip accompanying black-and-white rushes from colour originals |
| 8. | an experimental programme on radio or television |
| 9. | See pilot film |
| 10. | (modifier) used in or serving as a test or trial: a pilot project |
| 11. | (modifier) serving as a guide: a pilot beacon |
| —vb | |
| 12. | to act as pilot of |
| 13. | to control the course of |
| 14. | to guide or lead (a project, people, etc) |
| [C16: from French pilote, from Medieval Latin pilotus, ultimately from Greek pēdon oar; related to Greek pous foot] | |
| PILOT phased integrated laser optics technology |