suboctave /sub-okˈtiv/

1. The octave below
2. (also suboctave coupler) an organ coupler that gives an octave below

• boarding-pikes
• boardings
• boarding school
• boarding schools
• board-measure
• board meeting
• board meetings
• board of directors
• Board of Trade
• Board of Trade unit
• board out
• boardroom
• boardrooms
• boards
• boardsailing
• boardsailings
• boardsailor
• boardsailors
• board-school
• board-schools
• board shorts
• boards of directors
• board-wages
• boardwalk
• boardwalks