1. Formed between the upper and lower teeth
   "interdental consonants" 
2. Situated between teeth
   "an interdental space"

Encyclopedia: Interdental

• worm lizard
• worm salamander
• worm snake
• worm wheel
• worm-eaten
• worm-shaped
• wormcast
• wormhole
• Wormian bone
• wormlike
• wormseed
• wormseed mustard
• wormwood
• wormwood oil
• wormwood sage
• wormy
• worn
• worn spot
• worn-out
• worried
• worriedly
• worrier
• worriment
• worrisome
• worry