sĭsymbrĭum, ii, n., = σισύμβριον,
a fragrant herb sacred to Venus , perh. wildthyme or mint , Plin. 20, 22, 91, § 247; 19, 8, 55, § 172; 19, 10, 57, § 176; Ov. F. 4, 869.
sisymbrium ī, n , σισύμβριον, wild-thyme (consecrated to Venus): grata, O. ...
An Elementary Latin Dictionary