pikestaff

n 1 wooden handle of a pike （木制的）矛柄. 2 (idm 习语) plain as a pikestaff => plain1.

pigeon-hole, pigeon-toed, pigeonhole, piggery, piggish, piggishly, piggishness, piggy, pigheaded, pigheadedly, pigheadedness, piglet, pigment, pigmentation, pigmy, pigskin, pigsty, pigswill, pigtail, pike, pilaff, pilaster, Pilatus Porter, pilchard, pile, pile up, pile-driver, pile-up, piles, pilfer, pilferage, pilferer, pilgrim, pilgrimage, pill, pillage, pillar, pillar-box, pillbox, pillion,