guideword

listen to the pronunciation of guideword
Английский Язык - Английский Язык
A watchword; a word or phrase that serves as one's guide
A word that is printed at the top or bottom of the page in a reference work, in order to help readers find a specific entry
Any of the words in a memo or email that define metadata regarding the message, such as sender, recipient, and subject
{i} term or word that is displayed at the top of each page in a reference book