leakageleakeiteleaking polygonlean claylean concreteleaning structuresleap yearleaping weirleaseleast or squares algorithmleast squares adjustmentleast squares or least square or least squareleatlebens spurlechatelierite or fulgurites or fulguriteslecontiteledaledgeledge rock or ledge or ledgeledgerledgesleelee dunelee side or lee ward or lee ward or slip facelee ward or lee side or lee side or slip faceleeside or leeward or leewardleewardleft overbankleft slip or sinistral or sinistralleglegato injectionlegendlegranditelehneriteleifiteleightoniteleisingiteleiteitelemanskiitelemmleinitelemniscate ratiolemoynitelenaitelengenbachitelength ratioleningraditelennilenapeitelenoblitelenslens sand