grotto /grotˈō/

1. A cave
2. An imitation cave, usu fantastic or fanciful in appearance

• nailery
• nail file
• nail files
• nail gun
• nail guns
• nail-head
• nail-headed
• nail-heads
• nail-head-spar
• nail-hole
• nail-holes
• nailing
• nailings
• nailless
• nail one's colours to the mast
• nail polish
• nail polishes
• nail punch
• nail punches
• nail-rod
• nail-rods
• nails
• nail scissors
• nail set
• nail up