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OO gauge

American  
[oh-oh] / ˈoʊˈoʊ /

noun

  1. a model railroad gauge of 3/4 inch (19 millimeters).

Etymology

Origin of OO gauge

First recorded in 1920–25

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

About six years ago, I bought an OO gauge model steam locomotive from Hornby.

From The Guardian

As one grew older and clockwork became electric, OO gauge rather then O, the answer turned out to be "not always".

From The Guardian

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.