When something is not completely confirmed. Like if you use a pen it's confirmed. Pencilling in is a maybe.
" Did I book that music video?"

"They have you pencilled in."
by Sass o'clock October 11, 2015
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An abused instrument that is constantly being chucked a harmless bystanders.
*throws pencil*. Billy,"Owww!".
by Casserole March 21, 2003
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A writing tool used to mark paper. Made of graphite and wood and is very cheap.
by Pencil Definer May 31, 2004
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a long wooden shaft used to write
WHO IS STEALING THEM

I NEED MY PENCILS!
by a feeb September 9, 2008
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Something you start chewing on when you got no food at home.
by Enfero December 10, 2004
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Someone who has been scheduled for a fuck.
"You busy tonight?"

"Yeah sorry. I've penciled in Kristin for an hour before work."

"Cool. That chick is a total freak."

"Yup, yup."
by pH Balance January 24, 2008
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1.)A writing and drawing tool made of graphite and wood. Comes in various shapes (lenght, color). Also available in different degrees of strenght (in Germany: 2B, B, HB, H, 2H - from soft to hard).
Can be used in zero-gravity.

2.)Also childish slang word for penis.
1.) American in a russian space-station MIR:
American: *takes out a biro*
"See? We spend 100.000.000 $ to develop this new biro. One can write in space, underwater and upside-down with it."
Russian: "Quite impressive!" *takes notes with his pencil*

2.) "John's got his pencil out!"
*laughter*
by Durel January 26, 2006
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