a word, phrase, or sentence used, especially in advertising or journalism, to arouse or call attention.
a line in which a catchword appears.
a line of lesser importance, set shorter or sometimes in smaller type than the lines above and beneath it.
Theater. a line of comic dialogue expected to elicit laughter.
Origin of catchline
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019