blue note

1. 1.

   a flattened third or seventh

   Broadernote

   Part ofblues

Questions about blue note

What does blue note mean?

blue note means "a flattened third or seventh".

Is blue note a common word?

blue note is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.