repeating the same sequence of events without getting the expected desired results
repeatedly using the number pad for entering numbers when the numlock light is off OR if something is not plugged in unbeknownst to you, you keep hitting it thinking it's not working
by Craque June 10, 2005
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1. The most useless key on a computer keyboard.

2. The most useless fucktard at any given moment.
"err, i think i just told your girlfriend about you and that chick last week."

"nice one, you fuckin numlock".
by andy x September 16, 2009
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The most useless button on your keyboard.
I got hungry and ate my numlock
by Joe in the his-ouse September 4, 2008
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not being able to move
Oh crap! My legs are frozen in this ice so therefore I've been numlocked.
by Dj Blackhorse November 29, 2003
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The event that no matter how hard you work on a problem or how educated and tutored you are, you just can't get the right answer.
Did you figure out the square root of 1 yet?
No, I've had numlock all week.
by Mark Shackelford April 27, 2007
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The key situated at the top left of the NUMPAD Like capslock and scroll lock, it makes lights flash if one presses it too much.
Alt codes require the numlock to be on.
by Gumba Gumba April 8, 2004
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