Definition of "deadhead" [dead•head]

• A person who uses a free ticket for admittance, accommodation, or entertainment. (noun)
• A vehicle, such as an aircraft, that transports no passengers or freight during a trip. (noun)
• A person regarded as dull-witted or sluggish. (noun)
• A partially submerged log or trunk. (noun)
• To pilot or drive (a vehicle) carrying no passengers or freight. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Though I'm not really what you'd call a deadhead, at the end of the week in which it becomes apparent that our prime minister has declared war on culture — literally — the first thing I want to do is throw up some Grateful Dead."
• "One of the fun bits of being a deadhead is the links it brings.deadsongs. vue.21"
• "While the plant company behind Knock-Out roses claims you don't need to "deadhead," or remove their spent blooms, I find the plants look at lot neater, and seem to create fresh buds quicker, if you perform that chore."