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Mannerheim line

American

noun

a zone of Finnish fortification erected along part of the border between Finland and Russia before the Finno-Russian War.

Etymology

Origin of Mannerheim line

Named after Baron von Mannerheim

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.