Mainly U.S.: transferred use of the surname, in origin a derivative of the vernacular form of the medieval female name Rohesia (see Rose). As a modern first name it may in part be taken as a short form of Royston.
English (mainly Devon): 1. from Old French pilleur ‘plunderer’, formerly used as a nickname for a bailiff. 2. topographic name for someone who lived by a tidal creek (see Pill, Pyle). 3. topographic name from Old French piler ‘pillar’.