| Kreuzschlüssel | wheel brace |
| Fremdschlüssel | foreign key |
| Kreuzschnabel | crossbill |
| Hausschlüssel | housekey |
| Inbusschlüssel | Allen wrench |
| Maulschlüssel | open end spanner |
| Türschlüssel | door key |
| Zweitschlüssel | spare key |
| Kreuzschlag | overhand knot |
| Kurzschluss | short circuit |
| Altschlüssel | alto clef |
| Bassschlüssel | F clef |
| Baßschlüssel | bass |
| Bettschüssel | bedpan |
| Funkschlüssel | fob |
| Hauptschlüssel | master key |
| Kloschüssel | toilet bowl |
| Primärschlüssel | primary key |
| Redeschluss | peroration |
| Rührschüssel | mixing bowl mortar |