pa

Definition
(noun) an informal term for a father; probably derived from baby talk Definition
(noun) a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead Definition
(noun) a unit of pressure equal to one newton per square meter Definition
(noun) a Mid-Atlantic state; one of the original 13 colonies Definition
(noun) an electronic amplification system used as a communication system in public areas