Pole bean (Bot.), any kind of bean which is customarily trained on poles, as the scarlet runner or the Lima bean. -- Pole flounder (Zoöl.), a large deep-water flounder (Glyptocephalus cynoglossus), native of the northern coasts of Europe and America, and much esteemed as a food fish; -- called also craig flounder, and pole fluke. -- Pole lathe, a simple form of lathe, or a substitute for a lathe, in which the work is turned by means of a cord passing around it, one end being fastened to the treadle, and the other to an elastic pole above. -- Pole mast (Naut.), a mast formed from a single piece or from a single tree. -- Pole of a lens (Opt.), the point where the principal axis meets the surface. -- Pole plate (Arch.), a horizontal timber resting on the tiebeams of a roof and receiving the ends of the rafters. It differs from the plate in not resting on the wall.

Shoots against the dusky pole. Milton.

Magnetic pole. See under Magnetic. -- Poles of the earth, or Terrestrial poles (Geog.), the two opposite points on the earth's surface through which its axis passes. -- Poles of the heavens, or Celestial poles, the two opposite points in the celestial sphere which coincide with the earth's axis produced, and about which the heavens appear to revolve.