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key holder stresses
gen.	ключница (аксессуар fruit_jellies); держатель для ключей (VictorMashkovtsev)
commer.	администратор магазина (как вариант перевода на русский, A key holder is a retail worker who has additional leadership responsibilities beyond typical sales or service tasks. This position is between entry-level associates and assistant managers in an organizational structure. The key holder understands the processes of opening and closing the store. valerchen)
law, ADR	владелец ключа (AndreiKitsei)
sec.sys.	держатель ключа
tech.	патрон с выключателем (лампы)