variant of BOLT sb.3, Obs., a flour-sieve.
Hence (or from stem of bult, BOLT v.1), † bultpele, ? a shovel for putting meal into the bolter.
c. 1475. Voc., in Wr.-Wülcker, 808. Hoc pollentridium, a bultpele. Polenduare, a bult.