Definitions
1.nounA fan of the rock band The Grateful Dead.
2.nounA person either admitted to a theatrical or musical performance without charge, or paid to attend.
3.nounAn employee of a transportation company, especially a pilot, traveling as a passenger for logistical reasons, for example to return home or travel to their next assignment.
4.nounAnyone traveling for free.
5.nounA train or truck moved between cities with no passengers or freight, in order to make it available for service.
6.nounA person staying at a lodging, such as a hotel or boarding house, without paying rent; freeloader.
7.nounA stupid or boring person; dullard.
8.nounA 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.
9.nounDriftwood.
10.nounA zombie.
11.verbTo admit to a performance without charge.
12.verbTo travel as a deadhead, or non-paying passenger.
13.verbTo drive an empty vehicle.
14.verbTo send (a person or message) for free.
15.verbTo remove spent or dead blossoms from a plant."If you deadhead your roses regularly, they will bloom all season."