passkey

[ pas-kee, pahs- ]

/ ˈpæsˌki, ˈpɑs- /

master key.

skeleton key.

a private key.

a latchkey.

Origin of passkey

First recorded in 1810–20; pass + key¹

Gold was the only passkey to justice, to preferment, or to power.

History of the United Netherlands, 1600-09, Vol. IV. Complete |John Lothrop Motley
I'll bet that if you do the conductor either has a passkey or will break it down for me.

Combat |Dallas McCord Reynolds
Mr. Montgomery ascended the steps in a jaunty way, and, opening the door with a passkey, ascended the front staircase.

Paul the Peddler |Horatio Alger, Jr.
The door was opened with a passkey and Paul confronted the party.

Paul the Peddler |Horatio Alger, Jr.

As soon as they had explained what they wanted, the landlord got a passkey and took them to the room Holt had used.

The Yukon Trail |William MacLeod Raine

passkey

/ (ˈpɑːsˌkiː) /

any of various keys, esp a latchkey

another term for master key, skeleton key