1. a tower or other structure displaying or flashing a very bright light for the guidance of ships in avoiding dangerous areas, in following certain routes, etc.
2. either of two cylindrical metal towers placed forward on the forecastle of the main deck of a sailing ship, to house the port and starboard running lights.
Your love guides me well
Through torment and calm alike.
Focus in the night.
Clearing out the waves of life
With your smile for a lighthouse.
Crown Point Lighthouse appears courtesy of The Library of Congress