Puerto Rico Trench

[ pwer-tuh ree-koh trench, pwer-toh, pawr-tuh ]

noun

1. an elongate, flat oceanic trench in the Atlantic Ocean just north of Puerto Rico and the Virgin Islands, and the site of the Milwaukee Deep, the Atlantic’s deepest known place: associated with a fault zone that presents significant risk of earthquakes and tsunamis.

Word History and Origins

Origin of Puerto Rico Trench¹

First recorded in 1900–05