American English

Definition of headroom noun from the Oxford Advanced American Dictionary

 

headroom

 noun
noun
NAmE//ˈhɛdrum//
 
, NAmE//ˈhɛdrʊm//
 
[uncountable]
 
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the amount of space between the top of your head and the roof of a vehicle There's a lot of headroom for such a small car.
See the Oxford Advanced Learner's Dictionary entry: headroom