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1.
the adjoining area between two train cars.
Unable to find room in the passenger cabin, I was forced to stand in the traint.
by luke tierney September 07, 2008
 
2.
The time between the departure of trains.
Fred: I have to go home now.

Marissa: No dude, the next train to my suburban household isn't for another half an hour. You're leaving me in the traint. Whatevs.
by larry the bible guy April 07, 2009
 
3.
Serial trait
He had a row about a row of traint being as potent as an arrow.
by Hercolena Oliver July 04, 2010