Top definition
It's original definition was "Laughing out loud" (also written occasionally as "Lots of Laughs"), used as a brief acronym to denote great amusement in chat conversations.

Now, it is overused to the point where nobody laughs out loud when they say it. In fact, they probably don't even give a shit about what you just wrote. More accurately, the acronym "lol" should be redefined as "Lack of laughter."

Depending on the chatter, its definition may vary. The list of its meanings includes, but is not limited to:
1) "I have nothing worthwhile to contribute to this conversation."
2) "I'm too lazy to read what you just wrote so I'm typing something useless in hopes that you'll think I'm still paying attention."
3) "Your statement lacks even the vaguest trace of humor but I'll pretend I'm amused."
4) "This is a pointless acronym I'm sticking in my sentence just because it's become so engraved into my mind that when chatting, I MUST use the meaningless sentence-filler 'lol.'"

See: lmao, lmfao, rofl, lawl, heh, haha, lolol, and 120 for similarities.
Statement: Sorry if I'm not too cheery, my best friend just died yesterday.
Worthless Reply: lol

Statement: The golden ratio is truely an intersting aspect of not only mathematics, but art as well.
Worthless Reply: lol

Statement: ... And then he says, "Your mom goes to college!"
Worthless Reply: lol

Statement: Hey, are you doing anything tonight? You could come over to my house and play some Unreal Tournie...
Worthless Reply: lol, ok
by no_one_2000 August 10, 2005
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
2
The name 'Lol' is an abreviated form of the name 'Laurence'.
"Hey Lol, you alright?"

"..Well i was chattin to Lol and he said.."
by Lol B February 06, 2009
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
3
In it's day, the net abbreviation for the words "laugh out loud" and "lots of love" were both used to express true feelings.
Let's start with "Laugh Out Loud".

It is normally used, quite obviously, to imply that statement is humorous, such as;
Person 1 : I just watched (insert funny moving picture).

Person 2: Lololololololololol!!!!!11111@@@

In this example, person 2 implies that he/she is laughing at the phrase.

It's now very plain to see that Person 2 didn't even care to read the said message.

Here are the new definitions, the redifined lol.

1. I didn't care to read what you took the time to write to me, so i blurted out lol, the word that is always on the top of my mind, always to be used on message boards and all that crap.

2. I listened, but your quote lacked any humorous content. I will pretend it did to make you feel good.

3. I have nothing to say that will be of real significance to this debate/conversation, so i will pretend i know what i'm doing.

4. I really don't care.

Lots of love, my personal favourite definition, has kept it's true meaning.

The only definition...

The sender of this slang is showing that he/she loves you.
It's a sweet way, to say Lol, but sometimes i think that the sender could express it a little more, because three letters is a little cheap.
Sad Person: My cat just died...

Mindless net-geek: LOLLLLL!!11111

Girlfriend (with a life): Bye, babe, LoL.

Boyfriend (also with a life): -Speechless-

And, if you were nice enough to actually read this definition, you're my favourite. Yes, you.
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
4
An expression used when you feel something SHOULD be funny, but don't find it funny yourself

or

An expression used to convey confusion
Some Guy: lol I'm cracking halo
Another Guy: lol?

Some Guy: dude i saw sumthin weird 2day
Another Guy: lol?
by Oididoi November 07, 2004
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
5
Originally meant "laughing out loud" but is now so overused that it now means "I find that vaguely amusing" also a filler word now when there is a puse in the conversation or the person is lost for a response, or they are too stupid or lazy to think of one.
A: I'm probably gonna kill myself tonight...
B: lol
by philanthropic arsonist November 15, 2005
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
6
A happy face that has been bred with a lol.
It may be used in moments where a normal lol is not up to standards.
Man 1: Dude look at this cat eating a fish

Man 2: Lol)
by mmmsnsna December 30, 2008
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
7
It stands for "laughing out loud." A slight irony to this definition is that generally people don't literally laugh out loud. That's reserved for other acronyms such as, but not limited to, LMMFAO, LMAO, ROTFLMAO, etc. Lol is most commonly used as a slience breaker, a reply to a joke that is SUPPOSED to be funny but really isn't, or an answer to an uncomfortable or random statement that one couldn't think of a better response to.
Example 1:
Person 1: Hi
Person 2: Hey
Person 1: umm..
Person 2: uh.....
Person 1: lol

Example 2:
Person 1: I like to pick my nose and then massage the boogers on my anal orifice
Person 2: lol

Example 3:
Person 1: I got fired from my job today, got dumped, contracted HIV, lost an eye, got caught masturbating in the elementary school parking lot then shot the cop who tried to arrest me
Person 2: lol
by EXPLIZIT October 10, 2005
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug