barleycorn
(-kôrn′)
noun
- barley or a grain of barley
- an old unit of linear measure equal to inch
Origin:
ME barli-corn
See barleycorn in American Heritage Dictionary 4
noun- The grain of barley.
- A unit of measure equal to the length of a grain of barley, or about 1/3 inch (0.85 centimeter).
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