watchword
n.
also watch-word, c.1400, "password," from watch, n. in the military sense of "period of standing guard duty" + word, n.. In the sense of "motto, slogan" it dates from 1738.
| 词汇 | watchword | 
| 词根词缀 | Online Etymology Dictionary watchword n. also watch-word, c.1400, "password," from watch, n. in the military sense of "period of standing guard duty" + word, n.. In the sense of "motto, slogan" it dates from 1738. | 
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