a light horse-drawn two-wheeled vehicle: originally, one containing a box or section for transporting gun dogs
dogcart in American English
(ˈdɔgˌkɑrt)
noun
1.
a small, light cart drawn by dogs
2.
a small, light, open 19th-cent. carriage, usually with two wheels, having two seats arranged back to back: it originally had a box under the seat for a sportsman's dog