By-the-skin-of-one-s-teeth definitions

(idiomatic) Barely; closely; by a narrow margin; with nothing to spare.

I passed the test by the skin of my teeth.

prepositional phrase

Origin of by-the-skin-of-one-s-teeth

From the Bible Job 19.20. "My bones stick to my skin and to my flesh. I have escaped by the skin of my teeth."