a Swedish Europop band that scored big hits in the 90s. Their debut album "The Sign" was the number one album for the year 1994 in America. The title track was also the biggest song of that year in the U.S.A. Compared to ABBA, the group consists of Joker, Buddha, Lyn Bergssen and Jenny Bergssen.
Wlliam: Wanna hear some Ace of Base?

Leonard: Yeah! I saw some of their videos on TV. Man, those chicks are HOT!
by I Saw U2 Live Twice December 23, 2006
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When you know your "in" with a fine piece of ass.
-tyler and joe are at a party talking to two very attractive girls that quickly invite them back to their place. As they follow them into the house they look at each other, and they know

"we got an Ace on Base"

- After approaching a girl she quickly writes down her number on your forearm....Ace on Base
by Braveheart Brothers April 25, 2011
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A swedish Euro pop group whose first hit single in the US was The Sign in 1992. The whole album was badass. They were somewhat of an updated version of ABBA, in which there was a blonde girl, blonde guy, brunette girl, and brunette fat guy.
Have you heard the new Ace of Base album?

See also: ABBA
by ToxicArtichoke November 24, 2006
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AN AWESOME AWESOME AWESOME Band from the late 90's ish and its awesome. They rock man.
"Dont turn around you dont wanna see my heart breakin dont turn around i dont want you seein me cry"
by Joel April 23, 2005
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A dude whose has a loud car stereo system. It could be good or bad.
Damn Leroy is the Ace of Base. or

Look at that asshole he thinks he is the Ace of Base.
by Luap Sille May 4, 2005
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When you know you have an in with a girl; when you know your about to get yours, and it's just a matter of when and where, cause you already know shes down.
I have this girl texting me all the time wanting to hang out. I have an Ace on Base, all I have to do is tell her what time to come over or when to meet up.

He's got that girl hanging all over him, so you already know he's got an Ace on Base
by Brocrastinators May 5, 2011
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I fucking hard band from Sweden, that was hugely popular in the early 90's. Big Hits were the The Sign, Cruel Summer, etc. Still rocks out even today.
James: Damn boy, get the sign on, I wanna funk out to that shit.

Josh: Ye dawg, that shit is so addicting.
by P Style June 6, 2005
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