x Meaning, Definition & Usage

1. noun the cardinal number that is the sum of nine and one; the base of the decimal system
   10; decade; tenner; ten.
   
2. noun the 24th letter of the Roman alphabet
   ex.
   
3. noun street names for methylenedioxymethamphetamine
   cristal; ecstasy; XTC; Adam; go; hug drug; disco biscuit.
   
4. adjective satellite being one more than nine
   10; ten.
   

WordNet