Trenchmore \Trench"more\, n. A kind of lively dance of a rude, boisterous character. Also, music in triple time appropriate to the dance. [Obs.] All the windows in the town dance new trenchmore. --Beau. & Fl. Trenchmore \Trench"more\, v. i. To dance the trenchmore. [Obs.] --Marston.