suboctave /sub-okˈtiv/

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

• Crab Nebula
• crab-nut
• crab-nuts
• crab-oil
• crabs
• crab's-eyes
• crab-sidle
• crab-sidled
• crab-sidles
• crab-sidling
• crab stick
• crabstick
• crab sticks
• crabsticks
• crab-stones
• crab tree
• crab trees
• crabwise
• crab-wood
• crab-yaws
• crachach
• crack
• crack a bottle
• crack a can
• crack a crib