to add other recorded sound or music, as a supplementary instrumental or vocal track, to a taped musical track to complete or enhance a recording.
to add (a track or tracks) to a musical recording.
a recorded segment or layer of instrumental parts, vocalization, or sound effects integrated into a musical recording.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use overdub in a sentence
“Mountains” was a sonic left-turn from Helium’s swan song, 1997’s “The Magic City,” a big studio rock record thick with layers of synthesized strings and guitar overdubs.Mary Timony’s ‘Mountains’ confused lots of listeners 20 years ago. It always made perfect sense to her. | Mariana Timony | February 26, 2021 | Washington Post
British Dictionary definitions for overdub
to add (new sound) on a spare track or tracks
the addition of new sound to a recording; the blending of various layers of sound in one recording
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012