LOL may refer to any of the following:
1. Shorthand for laughing out loud, LOL is an abbreviation used in online chats or posts to indicate that the writer finds something humorous. LOL is also less commonly short for lots of laughter and laughing online and is also often substituted by LAL, LAWL (laughing a whole lot), LOLZ, LUL, and LULZ.
Should I capitalize "LOL" or write it in all lowercase?
3. Short for lots of luck, LOL is another way of wishing someone good luck. This term could also be used sarcastically, as telling someone they don't have a chance.
4. Although not as common, LOL also means lots of love and be something added at the end of an e-mail, letter, or another correspondence.