suboctave /sub-okˈtiv/

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

• teaching
• teaching aid
• teaching aids
• teaching fellow
• teaching fellows
• teaching hospital
• teaching hospitals
• teaching machine
• teaching machines
• teaching practice
• teaching practices
• teachings
• teach-ins
• teachless
• teach school
• teach your grandmother to suck eggs
• tea clipper
• tea clippers
• tea cloth
• tea cloths
• tea cosies
• tea cosy
• tea-cosy
• teacup
• teacupful