turtleback
noun
tur·tle·back ˈtər-tᵊl-ˌbak 
: a raised convex surface
turtleback adjective
or turtle-backed
ˈtər-tᵊl-ˌbakt
Word History
First Known Use
1872, in the meaning defined above
- started in
- started in on
- started off
- started on
- started on at
- started out
- started over
- starter
- starter home
- starter home/house
- starter house
- starter kit
- starter set
- starters
- starthroat
- starting
- starting bar
- starting block
- starting box
- starting friction
- starting gate
- starting grid
- starting gun
- starting hole
- starting in