חלל

Noun

 * 1) space, void empty volume
 * 2) outer space
 * 3)  cavity
 * 4) a person killed, especially in war, casualty
 * 5)  The son of a kohen and a woman who a kohen is not halachically permitted to marry and who is thus unable to perform priestly functions in the Temple of Jerusalem

Etymology
From.

Noun

 * 1) space, void empty volume