thĕristrum — Lewis & Short
thĕristrum, i, n., = qe/ristron,
I a summer garment.
I Lit. (late Lat.), Hier. in Isa. 2, 3, 23; Vulg. Gen. 38, 14.—
II Trop., a garment, covering:
theristrum pudicitiae,Hier. Ep. 107, 7.