pay·load

[pey-lohd]
noun
1.
the part of a cargo producing revenue or income, usually expressed in weight.
2.
the number of paying passengers, as on an airplane.
3.
Aerospace, Military.
a.
the bomb load, warhead, cargo, or passengers of an aircraft, a rocket, missile, etc., for delivery at a target or destination.
b.
the total complement of equipment carried by a spacecraft for the performance of a particular mission in space.
c.
the explosive energy of the warhead of a missile or of the bomb load of an aircraft: a payload of 50 megatons.

Origin:
1925–30; pay1 + load

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
payload (ˈpeɪˌləʊd) [Click for IPA pronunciation guide]
 
n
1.  that part of a cargo earning revenue
2.  a.  the passengers, cargo, or bombs carried by an aircraft
 b.  the equipment carried by a rocket, satellite, or spacecraft
3.  the explosive power of a warhead, bomb, etc, carried by a missile or aircraft: a missile carrying a 50-megaton payload

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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00:10
Payload is always a great word to know.
So is interrobang. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a gadget; dingus; thingumbob.
Etymonline
Word Origin & History

payload
1930, from pay (n. or v.) + load (n.). Originally the part of an aircraft's load from which revenue is derived (passengers, cargo, mail); fig. sense of "bombs, etc. carried by a plane or missile" is from 1936.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
The latter payload successfully separated, unfurled itself, and has been
  exciting space scientists since.
Scientists have doubled the payload of today's popcorn-at the expense of taste.
Every minute or so, a new one pulls up ahead of the paving machines to release
  a flood of wet concrete from its payload.
Anyway, in this case severe instability or a shutdown would be the payload and
  a policing system would never notice it.
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