tune in . tune in To adjust a radio or television set to pick up a certain station. Bob tuned in his portable radio to a record show. Tom tuned in to Channel 11 to hear the news. Categories: add yours TV Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: T Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Comment on this entry