Definitions

1. noun

A cart or platform that is designed to be used in conjunction with a vehicle, typically a lorry or a truck, to carry heavy loads.

“The company invested in an undercart to facilitate the transportation of construction materials.”

2. noun

A small cart or platform that is designed to be used under a vehicle, typically to carry luggage or supplies.

“The undercart on my car came in handy when I had to carry groceries from the store.”