geode /jēˈōd/

1. A rock cavity lined with crystals that have grown inwards, a druse (geology)
2. A rock or stone having this (geology)
3. A rounded hollow nodule of ironstone (mining)

• foot soldier
• foot soldiers
• footsore
• footstalk
• footstalks
• foot-stall
• foot-stalls
• footstep
• footsteps
• footstool
• footstooled
• footstools
• foot-tapping
• foot the bill
• foot-ton
• foot-ton force
• foot-tons
• footwall
• footwalls
• foot-warmer
• foot-warmers
• footway
• footways
• footwear
• footwears