Definition of "unbrace" [un•brace]

• To set free by removing bands or braces. (verb-transitive)
• To release from tension; relax. (verb-transitive)
• To make slack; weaken. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "ÂÂCaptain Jax waited until he was sure the worst was over before instructing the muscles in his body to unbrace themselves from his seat, and it took some time before those muscles began to obey."
• "By its minute glow, she located the nightrobe the Prince had included in her luggage, an amazing confection of gauze and lace, and went to unbrace the chair from the door."
• "Together all set their sheets, and all at once slacken their canvas to left and again to right; together they brace and unbrace the yard-arms aloft; prosperous gales waft the fleet along."