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light-tight.
lighttight
American
[lahyt-tahyt]
/ ˈlaɪtˌtaɪt /
adjective
Chiefly British.
Etymology
Origin of lighttight
1880–85; light 1 + tight, on the model of watertight, airtight, etc.
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.
