1.   Children are sort of like a bottomless hole.

2.   For instance, they commonly interpret a dark pattern in a rug as a bottomless hole, or see menacing demons in shadows.

3.   He led us through a centuries-old cave, where we soaked in a cool mineral spring and bottomless blue hole.

4.   The Jets have talked incessantly and desperately in recent weeks about starting faster to avoid the bottomless holes in which they seem to sink week after week.