Bermuda Triangle

WordReference Random House Unabridged Dictionary of American English © 2025

Bermu′da Tri′angle, 

1. the triangular area in the Atlantic Ocean bounded by Bermuda, Puerto Rico, and a point near Melbourne, Florida, in which a number of ships and aircraft are purported to have disappeared mysteriously.

• 1970–75

Collins Concise English Dictionary © HarperCollins Publishers::

Bermuda Triangle noun

1. an area in the Atlantic Ocean bounded by Bermuda, Puerto Rico, and Florida where ships and aeroplanes are alleged to have disappeared mysteriously