Is “Lightship” a Scrabble word?
Yes
LIGHTSHIP
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Lightship
noun
1.A vessel riding at anchor and displaying a light for the guidance of sailors, in a position where a fixed lighthouse structure would be impracticable.
Synonyms: lightboat, lightvessel