Definition of bar line in English:

bar line

noun

Music
  • A vertical line used in a musical score to mark a division between bars.

    • ‘Stopping before a bar line inhibits the central nervous system of the student who could otherwise tend to take over and encourage rushing over bar lines into downbeats.’
    • ‘You have the voice moving free across the bar line.’
    • ‘That is absurd, because the bar line is a notational, not a musical, matter.’
    • ‘Here, the phasing occurs solely through human means, as the music gets pushed bit by bit ‘ahead’ of the bar line.’
    • ‘As a result, notated bar lines may not match up to the bar lines one hears.’

Pronunciation:

bar line

/ˈbär ˌlīn/