dead·head (d?d?h?d?)n.1. A person who uses a free ticket for admittance, accommodation, or entertainment.2. A vehicle, such as an aircraft, that transports no passengers or freight during a trip.3. Informal A person regarded as dull-witted or sluggish.4. A log or trunk that is partially submerged or lying just beneath the surface.v. dead·head·ed, dead·head·ing, dead·heads v.tr.1. To pilot or drive (a vehicle) carrying no passengers or freight.2. To remove dead or withered flowers from (a plant), especially to promote new blooms or prevent the setting of seeds.v.intr.1. a. To travel as an employee of an airline or other public carrier for free, especially en route to or from one’s assigned duties.b. To make a trip without passengers or freight.c. To pilot or drive a vehicle on such a trip: “The instruments were out, and it meant they had to deadhead back on another airplane” (Walter J. Boyne).2. To bypass a senior employee in order to promote a more junior employee.adv. Without passengers or freight; empty.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.deadhead (?d?d?h?d) n1. a dull unenterprising person2. a person who uses a free ticket, as for a train, the theatre, etc3. (Railways) US and Canadian a train, etc, travelling empty4. US and Canadian a totally or partially submerged log floating in a lake, etcvb5. (Horticulture) (tr) to cut off withered flowers from (a plant)6. (intr) US and Canadian to drive an empty bus, train, etcCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014dead?head (?d?d?h?d) n. 1. a person using a complimentary ticket or free pass. 2. a commercial vehicle that operates empty, as when returning to a terminal. 3. a stupid or boring person; dullard. 4. a sunken or partially sunken log. v.t. 5. to transport (someone) as a deadhead. 6. to remove faded blooms from (ornamental plants), esp. to encourage further blooming. v.i. 7. to act or serve as a deadhead. 8. a. (of a commercial vehicle) to travel without cargo or paying passengers. b. (of a person) to drive such a vehicle. [1570?80] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.deadheadPast participle: deadheadedGerund: deadheadingImperativePresentPreteritePresent ContinuousPresent PerfectPast ContinuousPast PerfectFutureFuture PerfectFuture ContinuousPresent Perfect ContinuousFuture Perfect ContinuousPast Perfect ContinuousConditionalPast ConditionalImperativedeadheaddeadheadPresentI deadheadyou deadheadhe/she/it deadheadswe deadheadyou deadheadthey deadheadPreteriteI deadheadedyou deadheadedhe/she/it deadheadedwe deadheadedyou deadheadedthey deadheadedPresent ContinuousI am deadheadingyou are deadheadinghe/she/it is deadheadingwe are deadheadingyou are deadheadingthey are deadheadingPresent PerfectI have deadheadedyou have deadheadedhe/she/it has deadheadedwe have deadheadedyou have deadheadedthey have deadheadedPast ContinuousI was deadheadingyou were deadheadinghe/she/it was deadheadingwe were deadheadingyou were deadheadingthey were deadheadingPast PerfectI had deadheadedyou had deadheadedhe/she/it had deadheadedwe had deadheadedyou had deadheadedthey had deadheadedFutureI will deadheadyou will deadheadhe/she/it will deadheadwe will deadheadyou will deadheadthey will deadheadFuture PerfectI will have deadheadedyou will have deadheadedhe/she/it will have deadheadedwe will have deadheadedyou will have deadheadedthey will have deadheadedFuture ContinuousI will be deadheadingyou will be deadheadinghe/she/it will be deadheadingwe will be deadheadingyou will be deadheadingthey will be deadheadingPresent Perfect ContinuousI have been deadheadingyou have been deadheadinghe/she/it has been deadheadingwe have been deadheadingyou have been deadheadingthey have been deadheadingFuture Perfect ContinuousI will have been deadheadingyou will have been deadheadinghe/she/it will have been deadheadingwe will have been deadheadingyou will have been deadheadingthey will have been deadheadingPast Perfect ContinuousI had been deadheadingyou had been deadheadinghe/she/it had been deadheadingwe had been deadheadingyou had been deadheadingthey had been deadheadingConditionalI would deadheadyou would deadheadhe/she/it would deadheadwe would deadheadyou would deadheadthey would deadheadPast ConditionalI would have deadheadedyou would have deadheadedhe/she/it would have deadheadedwe would have deadheadedyou would have deadheadedthey would have deadheadedCollins English Verb Tables © HarperCollins Publishers 2011