Miller

n.
  1. One who keeps or attends a flour mill or gristmill.
  2. A milling machine.
    1. A moth or lepidopterous insect; -- so called because the wings appear as if covered with white dust or powder, like a miller's clothes. Called also moth miller.
    2. The eagle ray.
    3. The hen harrier.
    Miller's thumb
    1. A small fresh-water fish of the genus Uranidea (formerly Cottus), as the European species (Uranidea gobio), and the American (Uranidea gracilis); -- called also bullhead.
    2. A small bird, as the gold-crest, chiff-chaff, and long-tailed tit.