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Dictionary

Words, grammatical forms and meanings linked to the ontology.

petra en · NOUN

Etymology

From Latin petra (“rock”). Doublet of piedra.

Meanings

  1. stone, a weight equal to 14 pounds.
    • Generally, however, the stone or petra, almost always of 14 lbs., is used, the tod of 28 lbs., and the sack of thirteen stone. 1882, James Edwin Thorold Rogers, A History of Agriculture and Prices in England, volume 4, page 209: