headroom
['hɛd`rum]
n. 净, 身

1. There is not enough headroom for buses to go under this bridge.
   座桥梁净够, 汽通.
2. There is not enough headroom for buses to go under this bridge.
   座桥梁净够,汽通.
3. There is not enough headroom for buses to lor=# cc0066> go under this bridge.
   座桥梁净够,汽通.

headroom
[ noun ]

1. vertical space available to allow easy passage under something

<noun.quantity>

2. the capacity of a system to reproduce loud sounds without distortion

<noun.act>

Headroom \Head"room`\ (-r[=oo]m`), n. (Arch.)
See {Headway}, 2. [Mostly Brit.]
[1913 Webster +PJC]