Definition of "voiceover"

voiceover

noun
plural voiceovers
1. Alternative spelling of voice-over
  Quotations
  Within a few weeks I was in the studio recording voiceovers. They're harder than they look, and the way that editors and producers create narratives from hundreds of hours of footage still amazes me.
  2020 May 6, Tim Dunn, “The Architecture The Railways Built”, in Rail, page 76
verb
third-person singular simple present voiceovers, present participle voiceovering, simple past and past participle voiceovered
1. Alternative spelling of voice-over