|Noah Webster's Dictionary|
1. (n.) A deep opening made by disruption; a breach in the earth or a rock; a void; a fissure.
2. (n.) A void space; a gap or break, as in ranks of men.
Chasm (2 Occurrences)
Luke 16:26 And, besides all this, a vast chasm is immovably fixed between us and you, put there in order that those who desire to cross from this side to you may not be able, nor any be able to cross over from your side to us.' (WEY DBY YLT NAS RSV NIV)
Jeremiah 48:28 You inhabitants of Moab, leave the cities, and dwell in the rock; and be like the dove that makes her nest over the mouth of the abyss. (See NAS)