v. [Echoic.]
1. intr. To make a continuons low-pitched humming or buzzing sound.
1892. Q, I saw three Ships, i. Amid the scraping and zooming of the instruments, string and reed. Ibid. (1904), Shining Ferry, xiv. A couple of humble-bees zoomed against the window pane.
2. Aircraft slang. (See first quot.) Hence Zoom sb., an act of zooming.
1917. Daily Mail, 19 July, 4/5. Zoom describes the action of an aeroplane which, while flying level, is hauled up abruptly and made to climb for a few moments at a dangerously sharp angle. Zooming is frequently the only means of avoiding an obstacle when flying low.
1918. B. Cable, Air Men o War, i. 11. The Silver Wings righted, zoomed sharply up, whirled round.