What is the meaning of Carr?

Any marsh; marshy ground, swampland.

In particular, a marsh or fen formed when the litter of decaying reeds (e.g. in a lake) raises the ground level above the water, allowing more vegetation like sedges and then low bushes or trees to grow; a marshy woodland.

Archaic form of car (wheeled vehicle).

rock

car (automobile)

cart (small, open, wheeled vehicle)

stone, rock

Source: wiktionary.org