- a rod on which a wheel turns, or one connected to a wheel so that they turn together
- a bar connecting two opposite wheels, as of an automobile
- the spindle at either end of such a bar
Origin of axleMiddle English axel (only in compound axeltre): see axletree
- A supporting shaft or member on or with which a wheel or a set of wheels revolves.
- a. The spindle of an axletree.b. Either end of an axletree.
Origin of axleMiddle English axel from Old Norse öxull
- (obsolete) Shoulder.
From Middle English axle, eaxle, from Old English eaxl (“shoulder, armpit”), from Proto-Germanic *ahslō (“shoulder”), from Proto-Indo-European *aḱs- (“armpit”). Cognate with Eastern Frisian acsle (“shoulder”), Dutch oksel (“armpit”), German Achsel (“armpit”), Swedish axel (“shoulder”), Latin axilla (“armpit”), Latin axis (“axle”), Greek άξονας (áxonas, “axle”), Sanskrit अक्ष (ákṣa, “axle”), Sanskrit कक्ष (kakṣá, “room, armpit”), Russian ось (os', “axle”).
A combination of Old English eax and Old Norse öxull.