armĭlausa

ae, f.

acc. to Isid. Orig. 19, 22 fin., contr. from armiclausa

I. a military upper garment (post-class.), Paul. Nol. Ep. 22; id. Ep. 17; Schol. ad Juv. 5, 143.
Lewis & Short
A Latin Dictionary, 1879
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