box turtle

US /ˈbɑːks ˌtɜːr.tl̩/
UK /ˈbɑːks ˌtɜːr.tl̩/
"box turtle" picture
1.

a North American turtle that can completely enclose itself in its shell

:
We saw a box turtle slowly crossing the road.
The box turtle pulled its head and limbs into its shell when approached.