Definitions from Wiktionary ( )

▸ noun:  A person either admitted to a theatrical or musical performance without charge, or paid to attend.
▸ noun:  An employee of a transport company, especially a pilot or flight attendant, traveling as a passenger for logistical reasons, for example to return home or travel to the next assignment.
▸ noun:  Anyone traveling for free.
▸ noun:  A train or truck moved between cities with no passengers or freight, in order to make it available for service.
▸ noun:  A person staying at a lodging, such as a hotel or boarding house, without paying rent; freeloader.
▸ noun:  A stupid or boring person; dullard.
▸ noun:  A tree or tree branch fixed in the bottom of a river or other navigable body of water, partially submerged or rising nearly the surface, by which boats are sometimes pierced and sunk; snag.
▸ noun:  (slang) Driftwood.
▸ noun:  (slang) A zombie.
▸ verb:  (transitive) To admit to a performance without charge.
▸ verb:  (intransitive) To travel as a deadhead, or non-paying passenger.
▸ verb:  (transitive, intransitive) To drive an empty vehicle.
▸ verb:  (transitive) To send (a person or message) for free.
▸ verb:  (horticulture) (transitive) To remove spent or dead blossoms from a plant.
▸ noun:  (slang) A fan of the rock band Grateful Dead.
▸ noun:  (slang) Alternative form of Deadhead (“fan of the rock band The Grateful Dead”) [(slang) A fan of the rock band Grateful Dead.]

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