- 1x the number 10 in Roman numerals
- 2used to represent a kiss at the end of a letter, etc. Love from Kathy xxx.
- 3 used to show a vote for someone in an election Write an X beside the candidate of your choice.
- 4 used to show that a written answer is wrong
- 5used to show position, for example on a map X marks the spot.
- 6used in the past to show that no one younger than 17 was allowed to see a particular movie; now used in an unofficial way to describe a movie that contains a lot of sex compare NC-17