Any pinball tournament held under the auspices of the Professional and Amateur Pinball Association. / (aviation) Acronym of Parallax Aircraft Parking Aid.

Acronym of Professional and Amateur Pinball Association.

Of or pertaining to the pope or the papacy.

(often childish) Dad, daddy, father; a familiar or old-fashioned term of address to one’s father. / (informal) A pet name for one's grandfather. / A parish priest in the Greek Orthodox Church.

plural of papa

plural of PAPA

(idiomatic) A phrase used to encourage someone or something to approach.

(military, slang) command post

plural of Charlie Papa

It is easy to know the biological mother of a child, but difficult to be sure who the biological father is.