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Definitions

lighthouse

[lahyt-hous] / ˈlaɪtˌhaʊs /
NOUN
beacon
Synonyms
STRONGEST
flare lantern radar
STRONG
alarm alert balefire beam bonfire guidepost heliograph lamp lodestar pharos rocket sign watchtower
WEAK
signal fire smoke signal warning signal
NOUN
light
Synonyms
STRONGEST
bulb candle daylight flash glare glow lamp lantern radiation ray star sun sunshine window
STRONG
aurora beacon blaze brightness brilliance brilliancy coruscation dawn daybreak daytime effulgence emanation flare gleam glimmer glint glitter illumination incandescence irradiation lambency luminosity luster morn morning phosphorescence radiance refulgence scintillation sheen shine sparkle splendor sunbeam sunrise taper torch
WEAK
fulgor
Antonyms
STRONG
darkness dimness dullness eventide sundown sunset
WEAK
dark night obscurity
NOUN
Very lights
Synonyms
WEAK
beacon stormy petrel
NOUN
watchtower
Synonyms
STRONG
barbican beacon landmark observatory
WEAK
mirador

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

This makes the system behave like a flashing cosmic lighthouse.

From Science Daily • Mar. 11, 2026

I walk a frozen Bothnian Gulf at Nallikari, an obscured lighthouse, a delinquent lifeguard stand, and makeshift saunas stand on white expanse like archaeology.

From Salon • Mar. 8, 2026

A short hike to the beach afforded views of the starkly angular lighthouse known as the Charleston Light.

From The Wall Street Journal • Jan. 2, 2026

The Maritime & Coastguard Agency broadcasted warnings to ships in the Solent after the containers came off cargo ship the Baltic Klipper near the Nab tower lighthouse, off Bembridge.

From BBC • Dec. 8, 2025

Not so long before, the lighthouse keeper on Cuttyhunk had used dolphin fat to fuel his beacon, and I could not remember that without shrinking.

From "Beyond the Bright Sea" by Lauren Wolk