navigable semicircle

American

noun

Nautical.

the less violent half of a cyclone; the half blowing in the direction opposite to that in which the cyclone is moving and in which a vessel can run before the wind.

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navigable semicircle

They can usually rely upon "riding out" the "navigable semicircle" at anchor.

From Time Magazine Archive

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023