音标：['semәfɒ:]
n. 信号, 臂板信号, 旗语
vt. 用信号联络
vi. 打信号, 发旗语
【计】 信号; 号志; 信号灯
在线英汉词典

semaphore的短语、例句：

semaphore n 1 [U] system of sending signals by holding the arms or two flags in certain positions to indicate letters of the alphabet 旗语
send a message by semaphore 用旗语发送信息. 2 [C] device with red and green lights on mechanically moved arms, used for signalling on railways （铁路的）臂板信号机. semaphore, v [I, Tn, Tf, Dpr.f, Dpr.w, Dpr.t nopassive 不用於被动语态] send (messages) by semaphore 用旗语发送（信息）
semaphore (to sb) that help is needed/to send help （向某人）打旗语求救.