The Collaborative International Dictionary of English v.0.48:
Wristlet \Wrist"let\, n. An elastic band worn around the wrist, as for the purpose of securing the upper part of a glove. [1913 Webster]WordNet (r) 3.0 (2006):
wristlet n 1: a band or bracelet worn around the wrist [syn: wristlet, wrist band]