Third-person singular simple present indicative form of coast.(verb)
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Use "coasts" in a sentence
"Actually, the drive from Lake Chapala to Chiapas via Lázaro Cardenas and the Guerrero and Oaxaca coasts is a very long and often arduous drive no doubt."
"It seems that the most polluted area along Mexico´s coasts is the Bay of Chetumal."
"A growing trend among the middle class in middle America and the poor on the coasts is people holding down two or three jobs just to make ends meet."