a signal, as a flag or light, used to request a pilot.
a signal to indicate that a pilot is on board.
noun, Mining. 1. a small raise intended to be enlarged later.
noun 1. an experimental industrial plant in which processes or techniques planned for use in full-scale operation are tested in advance. noun 1. a small-scale industrial plant in which problems can be identified and solved before the full-scale plant is built
- Pilot officer
noun 1. the most junior commissioned rank in the British Royal Air Force and in certain other air forces
[pin-koo sh-uh n] /ˈpɪnˌkʊʃ ən/ noun 1. a small into which are stuck until needed. /ˈpɪnˌkʊʃən/ noun 1. a small well-padded cushion in which pins are stuck ready for use n. 1630s, from pin (n.) + cushion (n.).