(idiomatic, figuratively, usually humorous) An unknown location.

simple past tense and past participle of thin out

present participle of thin out

Third-person singular simple present indicative form of wear thin

present participle of wear thin

simple past tense of wear thin

past participle of wear thin

Extremely fine; so thin as to be almost invisible. / A very small difference, or advantage, when comparing two items.

(idiomatic) To lessen or weaken over time, as from overuse.

(simile) Extremely thin.