Top Definition
A letter or a pair of letters that remain in the entry box of an AIM window when the typer prematurely presses send or enter. This letter is either deleted or sent directly subsequent to the first entry.
JoeBloggs: Hey how's it going?
DonBonder: Not too ba
DonBonder: d

'd' is the AIM trailer.
by MetronomeArthritis March 25, 2006
5 Words related to AIM trailer

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