lake A body of water or other liquid of considerable size contained on a body of land. ENVO ENVO:00000020 EcoLexicon:lake FTT:221 FTT:704 FTT:909 Geonames:H.LK Geonames:H.LKS LAKE LTER:278 Lake SPIRE:Lake_or_pond SWEETRealm:Lake TGN:21114 TGN:21115 Wikipedia:Lake broad catch basin lake lakes llyn loch lochan lough mere mortlake open water pasteuer lake tarn lentic water body