Definitions

1. noun

A bar or beam that connects the front and rear axles of a vehicle, especially a cart or wagon, and supports the load.

“The old-fashioned cart had an ornate axletree that added to its nostalgic charm.”

2. noun

The central rod or beam that supports the axles of a vehicle, especially a bicycle, and connects them to the frame.

“The axletree on the bicycle was worn out and needed to be replaced.”