Word: lightship
Part of speech: Noun
Syllables: light
ship
Definition: 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.
Morphemes:
Affix: light
Language: en
PoS: Adjective
Meaning: Riding high because of no cargo; by extension, pertaining to a ship which is light.
Affix: ship
Language: en
PoS: Noun
Meaning: A sailing vessel with three or more square-rigged masts.