catchline: Meaning and Definition of

catch•line

1. a word, phrase, or sentence used, esp. in advertising or journalism, to arouse or call attention.
2. a line in which a catchword appears.
3. a line of lesser importance, set shorter or sometimes in smaller type than the lines above and beneath it.
4. a line of comic dialogue expected to elicit laughter.
5. slug (def. 10a).