A sentence, phrase, or word, prefixed to an essay, discourse, chapter, canto, or the like, suggestive of its subject matter; a short, suggestive expression of a guiding principle; a maxim.
A sentence, phrase, or word, forming part of an heraldic achievement.
A word used as a motto, as expressive of a principle, belief, or rule of action; a rallying cry.
A prearranged reply to the challenge of a sentry or a guard; a password or signal by which friends can be known from enemies.