barleycorn

  1. Noun.  A grain of barley.
  2. Noun.  (obsolete) The length of such a grain; a unit of length of approximately one third (or sometimes one quarter) of an inch or eight millimetres, still used as a basis for shoe sizes.
  3. Noun.  (architecture, woodworking) A small groove between two mouldings.

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This entry was last updated on RefTopia from its source on 3/20/2012.