Princeton's WordNet

1. war cry, rallying cry, battle cry, cry, watchword(noun)

   a slogan used to rally support for a cause

   "a cry to arms"; "our watchword will be `democracy'"

2. password, watchword, word, parole, countersign(noun)

   a secret word or phrase known only to a restricted group

   "he forgot the password"

Wiktionary

1. watchword(Noun)

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

2. watchword(Noun)

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

3. watchword(Noun)

   a rallying cry

Origin: From waccheword, morphologically as .

Webster Dictionary

1. Watchword(noun)

   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

2. Watchword(noun)

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

• wagwoordAfrikaans
• كَلِمَة السِّرArabic
• призивBulgarian
• lemaPortuguese (BR)
• hesloCzech
• die LosungGerman
• slagordDanish
• σύνθημαGreek
• lema, consignaSpanish
• juhtlauseEstonian
• كلمه عبورFarsi
• tunnussanaFinnish
• mot d'ordreFrench
• סיסמהHebrew
• आदर्शवाक्यHindi
• moto, sloganCroatian
• jelszóHungarian
• semboyanIndonesian
• slagorð, einkunnarorðIcelandic
• parola d'ordine; motto, sloganItalian
• 合い言葉Japanese
• 표어, 모토Korean
• slaptažodisLithuanian
• lozungs; motoLatvian
• cogan kata, motoMalay
• wachtwoordDutch
• slagord, parole, mottoNorwegian
• hasłoPolish
• lemaPortuguese
• cuvânt de ordineRomanian
• девизRussian
• hesloSlovak
• gesloSlovenian
• lozinkaSerbian
• paroll, slagordSwedish
• รหัสผ่าน; คำรหัส; คำสัญญาณThai
• parolaTurkish
• 座右銘，口號Chinese (Trad.)
• заклик; лозунгUkrainian
• اشارہUrdu
• khẩu hiệuVietnamese
• 口号，标语Chinese (Simp.)