This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A prearranged reply to a challenge, as from a guard or sentry; a password.

n. A rallying cry: Let our watchword be freedom.

n. a prearranged reply to the challenge of a sentry or a guard; a password or signal by which friends can be known from enemies

n. a word used as a motto, as expressive of a principle or rule of action; a maxim, byword

n. a rallying cry

n. A word given to sentinels, and to such as have occasion to visit the guards, used as a signal by which a friend is known from an enemy, or a person who has a right to pass the watch from one who has not; a countersign; a password.

n. A sentiment or motto; esp., one used as a rallying cry or a signal for action.

n. A word or short phrase to be communicated on challenge to the watch or sentinels in a camp; a password or signal by which friends can be known from enemies.

n. Hence Any preconcerted indication or a direction eagerly watched for, as a signal for action.

n. A word used as a motto, as expressive of a principle or rule of action; a maxim, byword, or rallying-cry.

n. The call of a watchman or sentry as he goes his rounds.

n. a secret word or phrase known only to a restricted group

n. a slogan used to rally support for a cause

"I agree that we are treading on slippery ground, so my watchword is "post like a good food critic" i.e. what happened and where without getting into "terrible" and such as adjectives."

positive identification    secret    arcanum    slogan    catchword    shibboleth    motto   

password    countersign    to set a watchword upon   

countersign    password    cry    wordy    shibboleth   

catchwords    passionateness    stalking-horse    England