The holes permitted water to flood up and freeze a new layer over the perilously thin crust on which the men worked.

Enfeebled by the drugs, her self-control was perilously thin.

The enemy line was still there, but it was perilously thin.

Accordingly, these ambitious young people bubble with high hopes, though the line between dreams and delusion may prove perilously thin.

The Mets are perilously thin in the middle of their infield.

A perilously thin majority of just three.

They reached the summit at 1:40 p.m, inching their way up the perilously thin ridge of ice.

It was perilously thin, a ribbon of milky white.

But the line between the two often wears perilously thin.

We were streaking across a perilously thin edge of safety at a speed that was too fast for reaction, almost.