Plural of brail; multiple instances of restraints or wing bindings used in falconry, or third-person singular verb.
From 'brail' + '-s' (plural/verb conjugation marker). Can function as both noun plural and verb form.
If you read medieval falconry manuals, 'brails' are just matter-of-fact mentioned as essential equipment—it's a word that tells you falconry was serious, technical, and involved specialized gear.
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