adjective Metallurgy.

brittle when at red heat, as iron or steel containing too much sulfur.

Origin of red-short

1720–30; < Swedish rödskört, neuter of rödskör, equivalent to röd red + skör brittle Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for red-short

Historical Examples of red-short