AXLE

axle|axletree. Axle, or Axletree, n. a shaft on which carriage wheels turn

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Ax″le (ăks″'l), n. [[OE. axel, exel, shoulder, AS. eaxl; akin to AS. eax axle, Sw. & Dan. axel shoulder, axle, G. achse axle, achsel shoulder, L. axis axle, Gr. ἄξων, Skr. aksha, L. axilla shoulder joint: cf. F. essieu, axle, OF. aissel, fr. dim. of L. axis. √205. Cf. 2d Axis.]] 1. 1. The pin or spindle on which a wheel revolves, or which revolves with a wheel.
2. 2. A transverse bar or shaft connecting the opposite wheels of a car or carriage; an axletree.
3. 3. An axis; as, the sun's axle.
Had from her axle torn The steadfast earth. Milton. ☞ Railway axles are called leading and trailing from their position in the front or in the rear of a car or truck respectively.