pilot waters

plural noun

, Nautical.

1. waters in which the services of a pilot are available or required by law.

Word History and Origins

Origin of pilot waters¹

First recorded in 1780–90

Example Sentences

A complete description of the instruments and methods necessary in navigating small boats in pilot waters, on soundings, and off shore.

From Project Gutenberg

Remember that in entering pilot waters the safest landmarks are permanent ones.

From Project Gutenberg