The Collaborative International Dictionary of English v.0.48:

Pod \Pod\, n. [Probably akin to pudding, and perhaps the same
   word as pad a cushion; cf. also Dan. pude pillow, cushion,
   and also E. cod a husk, pod.]
   1. A bag; a pouch. [Obs. or Prov. Eng.] --Tusser.
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   2. (Bot.) A capsule of plant, especially a legume; a dry
      dehiscent fruit. See Illust. of Angiospermous.
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   3. (Zool.) A considerable number of animals closely clustered
      together; -- said of seals.
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   Pod auger, or pod bit, an auger or bit the channel of
      which is straight instead of twisted.
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