a casing for the funnel of a powered vessel, large enough to provide an air space all around the funnel.
- Air castle
. a fanciful or impractical notion or hope; daydream. Historical Examples It was not easy to take up the old routine and forget the air castle. Saxe Holm’s Stories Helen Hunt Jackson All daydreaming builds this air castle; all ambition has this as its goal. The Nervous Housewife Abraham Myerson He passes to-day in building […]
- Air cavalry
an infantry or reconnaissance unit transported by air to combat areas. Historical Examples “A V and a half of air cavalry, circling around,” Heshto said. Oomphel in the Sky Henry Beam Piper Klem Zareff called in his air cavalry to help control the sightseers. The Cosmic Computer Henry Beam Piper Here the air cavalry, the […]
- Air cavalryman
a soldier assigned to the air cavalry.
- Air cell
Anatomy, Zoology, Botany. a cavity or receptacle containing air. Electricity. a cell in which the positive electrode is depolarized by the oxygen in the air. Historical Examples I inhaled great draughts of the dry, pure air, which seemed to penetrate to my very toes, and open every air cell in my body. From North Carolina […]