(#) One of the "Lost" Numbers. A combination between 3 and 12.
Also look for Sileven (7/11), Thrix (3/6), Firsteen (11), Seconteen, (12) and Exix. (after 9, nut before 10)
by G-Union November 26, 2003
4 Words related to Threlve
Top Definition
The age between twelve and fourteen.
You're not a teenager if you are only threlve.
by Jacques Firefly June 16, 2008

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