gambo
/ˈɡambəʊ/(also gambow) Welsh English and English regional (Herefordshire )
noun
1A low, flat cart, typically two-wheeled and with the sides consisting only of poles, used for carrying hay, corn, etc., over fields or uneven ground.
2 Welsh English. In extended use: any rudimentary, makeshift, or dilapidated vehicle, e.g. a home-made go-cart, an old and decrepit car, etc.
Origin
Mid 19th century. Origin unknown.