单词 | ack-ack |
释义 | ack-ack /ak"ak'/, n. Informal. (esp. during World War II). 1. antiaircraft fire. 2. antiaircraft arms. Also, Ack-Ack. [1935-40; for A.A. (abbrev. of a(nti) a(ircraft)) as said by British signalmen referring to sense 2] |
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