catch line

noun

Definition of catch line

1 a :a line containing a catchword
b :a short line (as of less important words in a title or display advertisement) between lines that are longer and sometimes larger
c :an identification line (as on a printer's proof or a manuscript)
2 :a phrase or sentence designed to catch attention especially in an advertisement or as a heading or title of a story, article, or newspaper item
3 :a line in a theatrical production expected to cause a laugh and often repeated as a gag

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