pĕristrōma — Lewis & Short
pĕristrōma, ătis, n., = peri/strwma,
I a covering, curtain, carpet:
Babylonia peristromata,Plaut. Stich. 2, 2, 54; id. Ps. 1, 2, 12:
conchyliata peristromata,Cic. Phil. 2, 27, 67.