Sluis

Etymology

 * (Sluis) First attested as sluse in 1290. Derived from . Named after a former lock. See also 🇨🇬.
 * (Utrecht) Derived from . Named after a nearby sluice.
 * (Hulst) Attested as De 3 Gezusters, Drie Gezusters in 1838-1857. Derived from . The alternative name Drie Gezusters ("Three Sisters") refers to the hamlet's location next to a levee called the Drie Gezustersdijk.