Pecos is a proper noun used most often to refer to the Pecos River or Pecos County in Texas, and occasionally to places named Pecos in the southwestern United States. It can also appear in geographic or historical contexts as a regional identifier. In pronunciation, it’s typically stressed on the first syllable and pronounced with a concise “pek-oss” or “PEE-kohs” quality depending on the speaker’s regional accent.
Full pronunciation guide