(informal) An escape clause.

(intransitive) To depart, especially for a sea voyage or military assignment. / (intransitive, figuratively) To leave, get out, or resign.

(idiomatic) From nowhere or nothing; from a non-existent or unknown source.

simple past tense and past participle of dig out

present participle of dig out

present participle of hollow out

Third-person singular simple present indicative form of dig out

simple past tense and past participle of hollow out

That has been hollowed out.

Third-person singular simple present indicative form of hollow out