Catchword
WordNet
noun
(1) A word printed at the top of the page of a dictionary or other reference book to indicate the first or last item on that page
(2) A favorite saying of a sect or political group
WiktionaryText
Noun
- A word under the right-hand side of the last line on a book page that repeats the first word on the following page.
- A word or expression repeated until it becomes representative of a party, school, business, or point of view.
Synonyms
- (word under right-hand side): guide word
- (word repeated to become representative): watchword