pile-driver

n machine for forcing piles into the ground 打桩机.

piggy, pigheaded, pigheadedly, pigheadedness, piglet, pigment, pigmentation, pigmy, pigskin, pigsty, pigswill, pigtail, pike, pikestaff, pilaff, pilaster, Pilatus Porter, pilchard, pile, pile up, pile-up, piles, pilfer, pilferage, pilferer, pilgrim, pilgrimage, pill, pillage, pillar, pillar-box, pillbox, pillion, pillory, pillow, pillow-fight, pillowcase (also `pillowslip), pilot, Pilot Officer, pilot-boat,