live axle
- noun
- /laɪv ˈæksəl/
- Specialized
- The truck's live axle provides better traction on rough terrain.
Examples
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Older trucks often use a live axle design for better durability under heavy loads.
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The car's live axle is responsible for transmitting power from the engine to the wheels.
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Technicians inspected the live axle for signs of wear after hearing strange noises during acceleration.
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Many modern vehicles use a live axle system for improved performance.
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Many off-road vehicles rely on a live axle to effectively transmit power to the wheels.
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The mechanic explained that a live axle is essential for the vehicle's performance during rough terrain driving.
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In off-road racing, a vehicle with a live axle can better maintain traction on uneven surfaces.
Synonyms
A part that takes engine power and turns the wheels
Surface Forms
Morphology
The meaning 'an axle that transmits driving power' follows directly from combining 'live' (active, in operation/powered) with 'axle' (the rod wheels rotate around). Although automotive jargon, the compositional relation is straightforward—'live' marks the axle as powered rather than passive—so a B1 learner who knows the constituents can infer the MWE meaning.
Etymology
Live axle comes from the simple picture of the bar between the wheels—the axle—being 'alive' because the live part turns and carries engine power to the wheels. So, 'live' means it is powered (not a 'dead' axle that only holds weight), and the phrase refers to an axle that sends driving power to the wheels.