PK

Initialism of preacher's kid, pastor's kid, or priest's kid: the child of a clergyman and/or clergywoman, especially Protestant.

Initialism of psychokinesis.

Initialism of primary key.

Initialism of player kill(er/ing).

Initialism of placekicker.

Initialism of penalty kick.

Initialism of penalty kill(ing).

Initialism of protein kinase.

Initialism of painkiller.

Initialism of penetrating keratoplasty.