1. Sīdā. A large river flowing from Uttarahimavā; its specific gravity is so slight that nothing can float on it. It flows through the Kañcanapabbata and many thousands of ascetics live on its banks. J.vi.100, 101.
2. Sīdā. An ocean, probably identical with Sidantara. It is the abode of Nāgas. J.vi.125.
3. Sīdā. A canal flowing eastwards from the Aciravatī (Cv.lxxix.53) (the channel of the Mahāvālukanadī).