Ball And Chain

To have a girlfriend that restricts hanging out with your bros or doing anything fun.

I wanted to hang out with Adam, Neil, and Cody, but Laurens got me on her ball and chain...

by Eddie Pitch August 26, 2010

Chain caller

People who refuse to believe in this age of cellphones that there are people who cannot hear their phone rings or is constantly out of reception for more than 5 seconds, and will call nonstop until the other party picks up the phone.

I was bombarded by Jesse the chain caller while I left my phone in the car.

by Jason Wang March 26, 2004

rolex chain

A wide gold chain, but not a herringbone, popular on African American musicians and athletes

That girl was blinging a phat rolex chain at the club!

by KROQKEN November 18, 2011

cut the chain

the act of a male getting a sex change to become a female.

After he cut the chain Bruse Jenner became Caitlyn Jenner.

by Countyeasy June 5, 2017

Chain Dog

A term of endearment used between friends that implies the person has been involved in something mischievous.

"Bill, you old chain dog, you! You're at it again!"

by C. Aleccia February 26, 2008

chain rule

In calculus, the chain rule is used to differentiate compositions of functions. It states that for any function f which is dependent on a variable u, and u is a function of a second variable x, then f is a function of x.

In Set Theory:

f(u)=u V u(x)=x V Vf(x)

In Calculus:

df/dx = du/dx(dx/du)

to differentiate (x+1)^2, one could multiply this out and apply the sum rule (derivative of a sum is the sum of the derivatives); but what if it were (x+1)^55? Suddenly the multipling out doesn't look so nice. To apply the chain rule, we must first define the functions. Let f(x)=(x+1)^55 and u=(x+1). Therefore f(x)=u^55. By the chain rule:
df/dx = df/du(du/dx)
df/dx = d/du(u^55)(du/dx)
df/dx = 55u(du/dx)
We earlier defined the variable "u" as (x+1). Now we substitute this in.
df/dx = 55(x+1)d/dx(x+1)
df/dx = 55x+55(1)
df/dx = 55x+55

by Gladwarez July 10, 2006

Off the chain

Wild; out of control

etym.: possibly derived from Fr. 'se déchaîner,' to burst out; to go wild; to arouse

"That set was off the chain, yo."

by lairdweller October 18, 2009