Tilt n.
1. A covering overhead; especially, a tent.
2. The cloth covering of a cart or a wagon.
3. Naut. A cloth cover of a boat; a small canopy or awning extended over the sternsheets of a boat.
Tilt boat Naut., a boat covered with canvas or other cloth.
Tilt roof Arch., a round-headed roof, like the canopy of a wagon.