Axletree

[æksәltri:]

(noun.) a dead axle on a carriage or wagon that has terminal spindles on which the wheels revolve.

Edited by Allison--From WordNet

(n.) A bar or beam of wood or iron, connecting the opposite wheels of a carriage, on the ends of which the wheels revolve.

(n.) A spindle or axle of a wheel.

Checked by Hillel