double bar

1. 1.

   notation marking the end of principal parts of a musical composition; two adjacent bar lines

   Broaderbar line

Questions about double bar

What does double bar mean?

double bar means "notation marking the end of principal parts of a musical composition; two adjacent bar lines".

Is double bar a common word?

double bar is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.