Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

Sĕmīrămis (Sămērămis, in good MSS. and Schol., Juv. 2, 108), is or ĭdis, f., = Σεμίραμις, the celebrated queen of Assyria, consort and successor of Ninus, Just. 1, 1, 9; Curt. 5, 1, 24; Ov. M. 4, 58; Juv. 2, 108.
Acc. Semiramin, Curt. 7, 6, 20; Amm. 28, 4, 9.
Abl. Semirami, Just. 36, 2, 1: Semiramide, id. 1, 1, 10.
So Cicero sarcastically calls the profligate A. Gabinius, Cic. Prov. Cons. 4, 9.
Hence, Sĕmīrămĭus, a, um, adj., of or belonging to Semiramis, Semiramian: Semiramio sanguine cretus Polydaemon, Ov. M. 5, 85: acus, i.e. Babylonian, Mart. 8, 28, 18; so, turres, Claud. Cons. Prob. et Olybr. 162.