hand throttle
- noun
- /hænd ˈθrɔtəl/
- Specialized
- He expertly controlled the hand throttle to maintain a steady speed while climbing the hill.
Examples
-
The hand throttle is set halfway down.
-
The driver adjusted the hand throttle to increase the speed of the vehicle.
-
With the hand throttle fully engaged, the engine roared to life.
Synonyms
A lever or pedal that controls an engine's power and speed
Surface Forms
Morphology
The meaning is directly derivable from combining 'hand' (operated by hand) with 'throttle' (a device controlling engine air/fuel flow); as a noun–noun compound it denotes a subtype or instrument, so a B1 learner who knows both words can infer it is a throttle operated by hand. This composition is a regular, cross-linguistic pattern in technical vocabulary and does not require idiomatic knowledge.
Etymology
Hand throttle comes from a simple picture: a lever you move with your hand to adjust the throttle, the part that controls an engine's speed. That's why it means 'a control you move by hand to change engine power'.