head ‧ room /ˈhed-rʊm, -ruːm/ BrE AmE noun [uncountable]
1 . the amount of space above your head, especially when you are in a car
2 . British English the amount of space above a vehicle when it is under a bridge
head ‧ room /ˈhed-rʊm, -ruːm/ BrE AmE noun [uncountable]
1 . the amount of space above your head, especially when you are in a car
2 . British English the amount of space above a vehicle when it is under a bridge
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012