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Sierra Madre del Sur

[see-er-uh mah-drey del soo r; Spanish syer-ah mah-th re th el soor]
noun
  1. a plateau mountain range in Guerrero and Oaxaca states, S Mexico. Highest peak 12,149 feet (3703 meters).
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018