3. Any of various devices for moving, carrying, or holding an item or collection of items, especially:
a. A lightweight wheeled cart, often fitted with shelves or racks.
b. A small tray with a handle and compartments for holding items such as toiletries or hardware.
c. A lightweight freestanding rack designed to hold accessories.
d. A small wheeled cart attached to a bicycle and used as a conveyance for a child.