Entry 2 senses Webster, 1913

Deadhead

/dĕd'-hĕdˌ/ · Dead·head · IPA /ˈdɛdhɛd/

01 n. One who receives free tickets for theaters, public conveyances, etc.

1.
One who receives free tickets for theaters, public conveyances, etc.[Colloq. U. S.]
2.
A buoy. See under Dead, a.(Naut.) See: Dead