Hypertext Webster Gateway: "lighthouses"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Lighthouse \Light"house`\ (-hous`), n.; pl.{Lighthouses}
(-houz`[e^]z).
A tower or other building with a powerful light at top,
erected at the entrance of a port, or at some important point
on a coast, to serve as a guide to mariners at night; a
pharos.
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