anklet, identificatory (noun), temporary metal anklet fastened about a captured Earth girl's ankle for transportation to Gor; used in place of a collar.

She was barefoot. About her left ankle there was, about two inches high, a beaded cuff, or anklet. Her garb was doubtless intended to suggest the distinctive, humiliating and scandalously brief garment in which red savages are sometimes pleased to place their white slaves. 
Book 17, Savages: pg 181