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Meaning of pea coal

pea' coal"

Pronunciation: [key]
  1. anthracite in sizes ranging from under in. (2.1 cm) to over in. (1 cm).
  2. bituminous in sizes ranging from under in. (1.9 cm) to over in. (1 cm).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.