Proto-Korean: *tòr- / *tùr-
Meaning: 1 revolve 2 surround
Russian meaning: 1 вращаться 2 окружать
Modern Korean: tol- 1, turɨ- 2
Middle Korean: tòrá-ka- 'return', tòrá-pò- 'look back', tōr- 1, tùrɨ̀- 2
Comments: Liu 223, 229, 239, KED 479, 504.