5490 GREEK χασμα, CHASMA khas'-mah from a form of an obsolete primary chao (to "gape" or "yawn"); a "chasm" or vacancy (impassable interval):--gulf.
χασμα Luke 16:26 And beside all this, between us and you there is a great gulf fixed: so that they which would pass from hence to you cannot; neither can they pass to us, that would come from thence.