An Etymological Dictionary of the German Language/Annotated/Schleuse

by Friedrich Kluge

Schleuse, feminine, ‘sluice,’ Modern High German only, formed from Low German slüse, Dutch sluis, ‘aqueduct,’ which is derived from Old French escluse, Modern French écluse (from early Middle Latin sclusa, exclusa). From the same source English sluice is derived.