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headroom
Definitions
[ˈhɛdrʊm], (Noun)
Definitions:
- the space above a driver's or passenger's head in a vehicle
(e.g: rear seat legroom and headroom are better than ever)
- the amount by which an audio signal can exceed the average or normal operating level without undergoing clipping or distortion
Phrases:
Origin
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definition by Oxford Dictionaries