(idiomatic) A child who returns home from school to an empty house and therefore must unlock/unlatch the exterior door with a key, especially a child of working or absent parent(s).

A form of cryptography which allows users to communicate securely without previously agreeing on a shared secret key (abbreviation PKC)

(computing) A certificate that uses a digital signature to bind together a public key with an identity — used to verify that a public key belongs to an individual.

(computing) A function key whose function can be assigned by the user or by a program.

(business) (insurance) An insurance policy taken out by a business to compensate that business for financial losses that would arise from the death or extended incapacity of an important member of the business.

(business) Risk carried by an organization that depends to a great extent on one individual for its success.

plural of key person insurance

plural of key person risk

(historical) A charm in the form of a metal nail, cross, or cone, used to brand dogs or cauterize wounds in an attempt to prevent or cure rabies.

(management) A financial or non-financial metric used to help an organization define and measure progress towards its goals.