whiteout.

1. A snowy condition in which ground, horizon, and sky become difficult to distinguish.

2. White material used to cover errors on a written or typed page.

Use it for

Words that belong together

• whiteout conditions
• sudden whiteout

On the page

A sudden whiteout erased the trail and the horizon.

Usage notes

Primary category: setting / environment. Forms: Singular whiteout; plural whiteouts. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Commonness: moderately common.