Lewis & Short

călĭendrum (călĭandrĭum, Arn. 6, p. 209), i, n. [κάλλυντρον, ornament], a high head-dress, made of layers of false hair; a head-dress worn by Roman women (very rare): caliendrum κόσμιον κεφθλῆς, Gloss. Philox.; *Hor. S. 1, 8, 48 (caliendrum hoc est galericulum, Porphyr., acc. to whom it was also used by Varro; cf. Varr. Sat. Men. 95, 10); Arn. l. l.; Tert. Pall. 4.