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Synonyms for Lighter (same or very similar meaning)

WordNet sense 1 (a substance used to ignite or kindle a fire):
igniter, ignitor

WordNet sense 2 (a device for lighting or igniting fuel or charges or fires):
light

WordNet sense 3 (a flatbottom boat for carrying heavy loads (especially on canals)):
barge, flatboat, hoy


From the ODE community, based on WordNetadd/edit