x adj : being one more than nine [syn: ten, 10] (noun)
1: the cardinal number that is the sum of nine and one; the base of the decimal system [syn: ten, 10, X, tenner, decade]
2: the 24th letter of the Roman alphabet [syn: X]
3: street names for methylenedioxymethamphetamine [syn: Adam, ecstasy, XTC, go, disco biscuit, cristal, X, hug drug]