1.)Another term for back-pack, yet not quite as popular.
2.) Used mostly in the early-mid 1900's by New Yorker's.
"Where the weed at?"
"It's in my knapsack, but you can't touch that!"
by Amber46290 August 15, 2008
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The female teabag. when a girl gingerly plops her funbags on another fellow's head or face. Usually resulting in a smile.
Omg...best past-time ever? Knapsacking.
by Humphrey Ballsack February 15, 2011
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A term intended to offend. Used as an insult, meant to replace terms like shithead, fuck-bag, asshole.
by rollingtortilla September 13, 2014
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When an old man sends you a text picture of his frozen penis with his tighty whities around his ankles.
That sick fucker sent me a picture of his cotton knapsack, again
by crammystad September 25, 2018
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when someone is referring to your very unattractive backpack. so therefore they are mocking you and they are calling it a knapsack

sometimes, this word can be said like you have a lisp. and it would be spelled like this: knapshack
by slaponte April 30, 2007
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A bag with one strap worn by metrosexual or homosexual males. Looking suspiciously like a manbag, but usually with a utilitarian design lacking the flair or self confidence of a genuine man bag. Consequently it is hard to determine if wearers of such an item are either metrosexual or homosexual and are more likely to be bicurious.
Brian: Geez Dave, whats with the man bag?

Dave: Its not a man bag, its a Dutch Marines Knapsack.
by zolasbackheel July 03, 2013
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v. The process of traveling while carrying no more provisions than can be contained in a knapsack.
After graduation, the beautiful little woman went knapsacking across eastern Europe.
by Saffi Mae October 02, 2013
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