suboctave /sub-okˈtiv/

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

• jumping plant lice
• jumping spider
• jumping spiders
• jump jet
• jump jets
• jump-jockey
• jump-jockeys
• jump leads
• jump off
• jump-off
• jump-offs
• jump on
• jump one's bail
• jump on the bandwagon
• jump out
• jump rope
• jump ropes
• jumps
• jump seat
• jump seats
• jump ship
• jump shot
• jump shots
• jump-start
• jump-started