the hard cylindrical core that bears the kernels of an ear of corn
corncob详细解释
corn.cob n.（名词）The hard, thick, cylindrical central core on which are borne the grains or kernels of an ear of corn, usually in rows.玉米棒子芯：玉米穗上通常一列列的，上面长有玉米颗粒的坚硬而厚的圆柱中心A corncob pipe.玉米棒子芯烟斗
