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11.
Electrical circuit used in a sound system to direct different frequencies to tweeters, woofers, and midranges or to power amps that power them. Passive crossovers use the power available, whereas active crossovers use powered devices such as transistors or op-amps to more cleanly divide the signal and are normally placed in the high impedence part of the circuit before the power amps.
I put active crossovers in my Maserati because I kept smoking the passive ones. My ride's system really hits hard now.
by hillsurfer March 24, 2007
 
1.
Cross over
Verb

1. To go to the spiritual realm when one dies and leaves the body.
2. To make somebody's spirit (persons or living creatures) go to the spiritual realm.
1. Earthbound spirits have not crossed over because they have some unfinished business / I often think about how it shall be when I cross over into the light.

2. Melinda is a medium who sees and speaks to earthbound spirits and crosses them over.
by Ezechiel February 15, 2007
 
2.
A crossover is that type of person who once belonged to a distinct subculture who then suddenly changes their style and behaviour to another subculture, usually coming from a change in fashion trends.
Person 1: "Hey, check him out, he doesn't know what group he's part of!"

Person 2: "He's such a crossover."
by MRTG July 27, 2011
 
3.
The characters from one story world meet with the characters of another.
The Jimmy + Timmy Power Hour (Fairly OddParents/Jimmy Neutron)
by DanMat6288 July 24, 2004
 
4.
1.n. A move in basketball in which a person jukes while bouncing the basketball from one hand to the other usually leaving the defender going in the opposite direction . It has become increasingly popular as of late due to talented users such as Allen Iverson, Tim Hardaway, And 1 team, etc.
Yo, he just broke ya boy's ankles with that crossover.
by barrettDC June 29, 2005
 
5.
A fanfiction in which several fandoms interact with one another.

Cross-overs largely involve time travel and interdimensional travel to meld two different fandoms.
I was confused when Dr. Gregory House was treating Harry Potter's illness, but I soon realized that I was merely reading a cross-over.
by Levstrong November 13, 2007
 
6.
Can be used in a positive or neutral sense to refer to an artist that has attained appeal beyond fans of the genre in which the artist started out. Can also be used in a negative sense that implies "selling out" to refer to the same artists or to artists who are attempting such a crossover. The negative connotation is most often used by purist fans or fellow performers within that genre. This term gained some prominence in early 1990s rap as some rappers 1) attempted to tailor their acts to white suburbia, 2) employed what was regarded by some as an excessive amount of R&B on records, or 3) engaged in collaborations with heavy metal artists, in the style of Ice-T. The negative version of the term is now used less often in rap circles, as many mainstream rappers have blended the avaricious hustling image of street culture with the rampant consumerism of white suburbia so as to attain both crossover status and street cred.
Black Jeff Foxworthy - "If you used to front one of the most innovative hip hop groups of the early nineties and you find yourself in a Hype Williams video, you might be a crossover."
by bluedevil July 20, 2006
 
7.
A style of music formed in the mid 80's combining hardcore and thrash.
Cryptic Slaughter, D.R.I
by Hank McBrutal July 10, 2005