Definition of "tagline"

tagline

noun
plural taglines
1. The punch line of a joke.
2. (marketing) An advertising slogan.
  Quotations
  Microsoft, Pfizer and JP Morgan Chase have set up offices in the country, a streamlined visa program has incentivized thousands of digital nomads to relocate to Athens, and a relentless tourism push — “You will want to stay forever!” runs the tagline — has lured a record number of Americans to the Aegean this summer.
  2022 August 22, Alexander Clapp, “The Rot at the Heart of Greece Is Now Clear for Everyone to See”, in The New York Times‎
3. (computing) A pithy quotation habitually appended to a signature in email, newsgroups, etc.
4. A line attached to a draft of cargo or a container to provide control and minimize pendulation of cargo during lifting operations.
5. A light rope attached to an object being hoisted by a crane, used to guide it while lifting or lowering.
verb
third-person singular simple present taglines, present participle taglining, simple past and past participle taglined
1. (transitive) To supply with an advertising slogan; to market as.