Definitions

1. noun

a word or phrase that is a motto or slogan, especially for an organization or movement

“The university’s watchword was ‘Knowledge is Power’.”

2. verb

to serve as a guiding principle or slogan

“The company’s new slogan watchwords the company’s commitment to sustainability.”

3. noun

a secret password or signal

“The spy’s watchword was a specific phrase to verify the identity of a fellow agent.”