1) European river 2) European watercourse 3) European waterway 4) Irish river 5) Irish waterway 6) Irish watercourse 7) River in Europe 8) River in Ireland 9) Watercourse in Ireland 10) Waterway in Europe 11) Waterway in Ireland 12) Watercourse in Europe Found on https://www.crosswordclues.com/clue/slaney