Museum, Plinio: Musiuum. Spartiano & Augustino, atq; alijs A worke cunningly painted that in some places seeme to bee embossed out, in some granen in, although it be all euen and plaine. Vulgus vocat mosaicum, vel musaicum opus.
Lewis and Short: Latin dictionary
Mūsēum, i, and Mūsīum, ĭi, n., = *mousei=on, a seat of the muses, a museum; a place for learned occupations, a library, academy, study, Varr. R. R. 3, 5, 9; Suet. Claud. 42; Spart. Hadr. 20; a grotto, Plin. 36, 21, 42, 154.