Any Irregular Polygon, usually of a daft or impractical shape.

Also used to describe someone who is a complete and total arse.
"damn dude, that funny car is pretty trongular"

"wow, my kit-kat is all trongle shaped"

"you're a trongle"

"Dan's a complete trongle"
by thunderpidgeon May 4, 2009
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A rack that doesn't make any eights in Scrabble.
Ugh, I drew a trongle out of the bag, and even though the whole board was open, I couldn't play a bingo.
by eldomino February 3, 2010
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