单词很忙

n. 信号标，旗语；臂板信号装置

v. 打旗语，发信号

semaphore 信号，旗语

sema-,记号，符号，-phor,承载，携带，词源同 bear,infer,phosphor.引申词义信号，旗语。

"apparatus for signaling," 1816, probably via French sémaphore, literally "a bearer of signals," ultimately from Greek sema "sign, signal" (see semantic) + phoros "bearer," from pherein "to carry" (see infer). Related: Semaphoric (188).

参考例句
Any target can be assigned a semaphore, by setting a variable called on that target. 任何目标都可以被赋予一个信号灯semaphore,方法是对该目标设置一个名为的变量。 It is like a semaphore signal waving before the eyes of the particle physicists. 它好象是在粒子物理学家眼前挥动的旗语信号。