beacon.

A light or signal used to mark a location, guide movement, or indicate danger.

Use it for

Words that belong together

• navigation beacon
• distress beacon

On the page

A navigation beacon flashed beyond the asteroid's shadow.

Usage notes

Primary category: sci-fi. Forms: Singular beacon; plural beacons. 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. Writing functions: description, technology. Commonness: moderately common.