beacon

¹ American  

[bee-kuhn] / ˈbi kən /

noun

1. a guiding or warning signal, as a light or fire, especially one in an elevated position.

   Synonyms:

   balefire, pharos, buoy, beam

2. a tower or hill used for such purposes.

3. a lighthouse, signal buoy, etc., on a shore or at a dangerous area at sea to warn and guide vessels.

4. Navigation.

   1. radio beacon.

   2. a radar device at a fixed location that, upon receiving a radar pulse, transmits a reply pulse that enables the original sender to determine their position relative to the fixed location.

5. a person, act, or thing that warns or guides.

6. a person or thing that illuminates or inspires.

   The Bible has been our beacon during this trouble.

7. Digital Technology.

   1. web beacon.

   2. a low-energy radio transmitter at a specific location within a store, museum, office space, etc., which identifies nearby mobile devices in order to send them location-specific messages or collect location-specific data.

      There must be a beacon in the luggage aisle because I just got a coupon for this suitcase on my phone.

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verb (used with object)

1. to serve as a beacon to; warn or guide.

2. to furnish or mark with beacons.

   a ship assigned to beacon the shoals.

verb (used without object)

1. to serve or shine as a beacon.

   A steady light beaconed from the shore.

Beacon ² American  

[bee-kuhn] / ˈbi kən /

noun

1. a city in SE New York.

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beacon British  

/ ˈbiːkən /

noun

1. a signal fire or light on a hill, tower, etc, esp one used formerly as a warning of invasion

2. a hill on which such fires were lit

3. a lighthouse, signalling buoy, etc, used to warn or guide ships in dangerous waters

4. short for radio beacon

5. a radio or other signal marking a flight course in air navigation

6. short for Belisha beacon

7. a person or thing that serves as a guide, inspiration, or warning

8. a stone set by a surveyor to mark a corner or line of a site boundary, etc

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verb

1. to guide or warn

2. (intr) to shine

Other Word Forms

• beaconless adjective
• unbeaconed adjective

Etymology

Origin of beacon

First recorded before 950; Middle English beken, Old English bēacen “sign, signal”; cognate with Old Frisian bāken, Old Saxon bōkan, Old High German bouhhan

Explanation

If your nose is shining like a beacon, I hope you are a reindeer employed by a jolly fat man from the North Pole. Beacon comes from an Old English word meaning “sign,” and that's what actual beacons are for lost ships: signs of having made it to land. Beacons are often some kind of light, like the bonfires that the ancient Greeks lit on hillsides to communicate that an army had come home from overseas. You'll also see beacon used figuratively, especially in the phrase “beacon of hope.”

Example Sentences

They wear a combat vest which contains a radio/GPS-coded beacon to transmit their position, while they also carry water, food, first-aid material and a pistol in order to survive.

From Barron's • Apr. 5, 2026

"The Moon was not just a symbol for thinking about our place in the Universe, it is a beacon for science and understanding where we came from."

From BBC • Mar. 30, 2026

L.A.’s landscape keeps changing, but Golden Apple has been a beacon of nerdisms.

From Los Angeles Times • Mar. 30, 2026

Bodytraffic quickly became a beacon for contemporary dance in a city where such a company was a rarity.

From Los Angeles Times • Mar. 12, 2026

It was as if, upon seeing the hollow, I’d planted a sort of homing beacon in it with my eyes.

From "Hollow City" by Ransom Riggs

Related Words

• flare
• lantern
• radar