UNBRACE

unbrace

(verb) remove a brace or braces from

unbrace

(verb) remove from tension

untie, unbrace, unlace

(verb) undo the ties of; “They untied the prisoner”

Source: WordNet® 3.1

Etymology

Verb

unbrace (third-person singular simple present unbraces, present participle unbracing, simple past and past participle unbraced)

(transitive) To undo, unfasten; to relax, loosen.

Source: Wiktionary

Un*brace", v. t. Etym: [1st pref. un- + brace.]

Definition: To free from tension; to relax; to loose; as, to unbrace a drum; to unbrace the nerves. Spenser.

Source: Webster’s Unabridged Dictionary 1913 Edition