Strong’s Greek
G5490 — chasma
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
χάσμα
chasma — pronounced khas'-mah
from a form of an obsolete primary chao (to "gape" or "yawn"); a "chasm" or vacancy (impassable interval):--gulf.
1 occurrence in the KJV.
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.