Hastings' Dictionary of the Bible (1898)
WAG'ON. The Egyptian wagon, which is well known to us from pictorial representations, consisted of two solid wooden discs connected with an axle, on which a body very similar to that of our wheelbarrows was placed. This primitive vehicle was drawn by oxen, and it was sometimes covered. The wagons mentioned in Num 7:3, 1 Kgs 15:8, for carrying the tabernacle, were no doubt built on this pattern.