Definition of "PF"

Initialism of pilot flying., a pilot currently in control of the flight trajectory of the aircraft, as opposed to pilot monitoring  examples

(physics) Initialism of peak flow.  examples

Initialism of power failure. Displayed by some household appliances after a power outage.  examples

(linguistics) Initialism of phonological form.  examples

(psychology) Initialism of psychometric function.

(basketball) Initialism of personal foul.  examples

(basketball) Initialism of power forward.  examples

(American football, fantasy football) Initialism of points for.  quotations  examples