D defs.my
Entry 1 sense Webster, 1913

Terrel

/tĕr'-əl/ · Ter·rel · IPA /tˈɛrəl/
01 n. A spherical magnet so placed that its poles, equator, etc., correspond to those of the earth.
  1. 1.
    A spherical magnet so placed that its poles, equator, etc., correspond to those of the earth.[Obs.]