Top definition
happening before something that is more important
you cannot take the math102 now ,before you should take the math101 before as a preliminary lesson.
by taka53 January 15, 2012
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Aug 11 Word of the Day
A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.
"My boyfriend has a total case of brain worms. He told me the cat was bugged so the Feds could listen in on us having sex..."

or

"You totally stumbled over that entire sentence. Can't speak English all of a sudden? What, do you have brain worms?"
by _Jez_ October 03, 2009
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2
“denoting an action or event preceding or done in preparation for something fuller or more important”

So pretty much something that happens in preparation for an event or action.
Preliminary
Sexually: anything you do before sex
- head
- fingering
- cunnilungus
by Moop moop October 22, 2018
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