pellet
n
1 small tightly-packed ball of a soft material such as bread or wet paper, made eg by rolling it between the fingers (面包或湿纸等的)小团, 小球, 小丸(如用手指捻成的): paper pellets 纸团.
2 small pill 小药丸.
3 small piece of shot1(5), esp for firing from an airgun 小弹丸(尤指气枪的).