UK railway slang for either a shunting signal or a subsidary signal.
Term is frowned upon within modern safety critical communications. Example being - shunter to driver "the signalman will give you the dummy in a minute" meaning the signal man will clear signal no. (XYZ) in a minute thus allowing the train to proceed.
by Clansman April 22, 2009
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"clip full of dummies like a seatbelt crash test" - Papoose
by Pap fan October 20, 2007
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The visible signs of uncontrollable and continuing behavior of being a dummy.
I think he is being given props for long hours however they are directly related to his dumminess.
by CLMKerr December 18, 2008
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Very, to an excessive degree.
Mr. Ewing's P.E. class is dummy hard!
by liz October 1, 2005
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A cheat in Halo 2 that exploits the Xbox Live network code to make a player invisible and invulnerable, allowing him to capture a flag in 15 to 20 seconds. It involves getting in and out of the passenger side of a Warthog repeatedly, then having a partner drive it to the base, at which point you take the flag, then take one step, which teleports you back to your base for the cap.

On a side note, Bungie has made dummying a bannable offense.
Dummying is one of the cheats that is slowly making Halo 2 into another Counterstrike.
by Seer-of-Shadows February 21, 2005
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Andrea is such an dummy
by BadBlair October 12, 2019
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A stupid person such as people like idiots.
Hey, why is that guy so stupid?
Stupid? He's a dummy!
by StupidIdoitDummy March 30, 2017
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