a bar connecting two opposite wheels of a carriage, wagon, etc.
Origin of axletreeMiddle English axeltre from Old Norse ?xultre from ?xull, axle (see axis) + tre, beam, tree
A crossbar or rod supporting a vehicle, such as a cart, that has terminal spindles on which the wheels revolve.
Origin of axletreeBlend of Middle English axel axle ; see axle . and Middle English axtre axletree ( ax ) ( from Old English eax ) ( tre tree ; see tree . )