This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. The quantity that a car can hold.

n. The official minimum weight necessary to ship freight at a reduced rate.

n. The contents of an automobile (passengers, supplies, etc.) for one trip.

n. the amount of cargo that can be held by a boat or ship or a freight car

n. a gathering of passengers sufficient to fill an automobile

"(e) Shipments of more than one ownership, in carload or truckload lots."

large indefinite quantity    large indefinite amount    gathering    assemblage   

polariscope    crapload    cartload    deck-load    truck-load