O gauge

[ oh ]

noun
  1. a model-railroad gauge of 1.25 inches (32 millimeters).

  2. Also called Q gauge. a model-railroad gauge of 1.1875 inches (30 millimeters).

Origin of O gauge

1
First recorded in 1900–05

Words Nearby O gauge

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023