Schlosser (der)
n.
locksmith, lock installer, lock maker, lock fixer; fitter, metalworker
Schloss (das)
n.
chateau, castle, palace, king's palace; lock, hinge, movable joint on which a door or other part turns
Schloß (das)
n.
(new spell.=Schloss) chateau, castle, palace, king's palace; lock, hinge, movable joint on which a door or other part turns