a ship equipped as a lighthouse and moored where a fixed structure would prove impracticable
WordReference Random House Unabridged Dictionary of American English © 2025
light•ship
(līt′ship′),USA pronunciation n.
- Nautical, Naval Termsa ship anchored in a specific location and displaying or flashing a very bright light for the guidance of ships, as in avoiding dangerous areas. Abbr.: LS
- light1 + ship 1830–40
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'lightship' also found in these entries (note: many are not synonyms or translations):