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.).
noun, Optics. 1. a distortion produced by a lens in which the magnification increases toward the edge of the field.
noun 1. 2 (def 1). 2. any of various shrubs of the genus Leucospermum, native to southern Africa, having yellow or reddish flowers.
[pin-duh n, -dan] /ˈpɪn dən, -dæn/ noun, Australian. 1. semiarid country; scrubland. 2. the scrubs, grasses, and small trees covering scrublands. /ˈpɪnˌdæn/ noun 1. a desert region of Western Australia 2. the vegetation growing in this region