PJ (Precision/Jazz) bass is a generic term for any bass guitar that has [[fender_precision_bass|precision]]-style pickups in the neck position and a [[fender_jazz_bass|jazz]]-style pickup in the bridge position. 
Precision-style pickups are recognizable by the fact that they consist of two offset rectangular blocks stacked on top of one another, while jazz-style pickups usually look like a single bar.
pj bass