Wearing a bandana or covered with a bandana; dressed or decorated with a bandana.
From bandana (a colorful head cloth, from Hindi bandhna 'to tie') plus the past-participle adjective suffix -ed.
Pirates, cowboys, and factory workers all wore bandanas for practical reasons — tied around the head or neck, they absorbed sweat, kept hair back, and could be used to filter dust in one practical piece of cloth!
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