Search Result for "headroom": 
Wordnet 3.0

NOUN (2)

1. vertical space available to allow easy passage under something;
[syn: headroom, headway, clearance]

2. the capacity of a system to reproduce loud sounds without distortion;
[syn: headroom, dynamic headroom]



The Collaborative International Dictionary of English v.0.48:

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


WordNet (r) 3.0 (2006):

headroom
    n 1: vertical space available to allow easy passage under
         something [syn: headroom, headway, clearance]
    2: the capacity of a system to reproduce loud sounds without
       distortion [syn: headroom, dynamic headroom]