sengka'an taab see. taab noun English. The upriver limit of a tidal current. Example sentence: Subanen. Ki sengka'an taab, ma'ananen, su gikteb nug dagat sumuba' sa' tumaab na, laak sa' da dig lawas tubig. English. The limit of the tide means the extent that sea water goes upstream during high tide; but it refers only to its extent in rivers. Example sentence: Subanen. Dia Giniin, maika' da gupia sengka'an taab dia, pu' meseleg gupia; laak sa' dia Gikuan, medepet pa diag buid tulay. English. The tide doesn't go up the Engin river very far, because it is very swift; but as for the Gikuan, the tide reaches up beyond the bridge.