What is a private signal, word, or phrase, which must be given in order to pass a sentry; a watchword called?
countersign — (Mil.) A private signal, word, or phrase, which must be given in order to pass a sentry; a watchword. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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- Published: 2026-07-17T00:00:00-07:00 · Modified: 2026-07-17T00:00:00-07:00