Chasm – A very deep opening in rock, ice, or the ground
In front of the castle, Mum (chasm) didn't notice the deep opening in the ground and almost fell in.
Examples of chasm in a sentence
Local legend said there was a monster living in the chasm, but he didn't believe them.
The chasm was so deep, no one had yet been able to reach the bottom.
What looked like a giant chasm to the ant was really just a small crack in the pavement.