Áxel-tree. n.s. [axis, Lat.] The pin which passes through the midst of the wheel, on which the circumvolutions of the wheel are performed.

                    Venerable Nestor
Should with a bond of air, strong as the axle-tree
On which heav'n rides, knit all the Grecians ears
To his experienc'd tongue. Shakesp. Troilus and Cressida.

The fly sate upon the axel-tree of the chariot-wheel, and said, what a dust do I raise? Bacon's Essays.

And the gilded car of day
His glowing axle doth allay
In the steep Atlantick stream. Milton's Comus.

He saw a greater sun appear,
Than his bright throne or burning axle-tree could bear. Milton's Christ's Nativity.