e.rev denotes an animal's place or posture of lying in wait, shown in scenes of retreat and crouching.

The two attestations depict animals entering or remaining in a setting of concealment and waiting: a living creature comes into it in Job 37:8, while animals crouch and lie in wait in Job 38:40.

1. A place or setting of lying in wait · dominant

   Both occurrences use the masculine singular absolute noun in animal scenes. In Job 37:8 the APB renders a living thing coming "into ambush" and dwelling in its habitation; in Job 38:40 it renders animals crouching in dens and "lie in wait" in a lair.

   Job 37:8Job 38:40

In the Anselm Project Bible: The APB presents the surrounding clauses with "ambush" in Job 37:8 and "lie in wait" in Job 38:40. These expressions confirm the waiting-and-concealment setting without isolating a fixed English equivalent for the noun.