All of the above definitions are WRONG.
NOSH is East-London Cockney street-slang for food, NOT Yiddish for snack- Polish Jew migrants borrowed the term during their short stay before travelling on to America.
Read a damn book you illiterate, ignorant Americans.
"Blimey guv, I need a dose o' nosh" (Blind me, governor (boss) I need some food (sic: for I am hungry).

by John Bulloock December 9, 2006
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Getting a gum job off a lady with false teeth.
by noshin'ell July 14, 2011
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Alvin: "Dude, that was fucking funny!"
Jeramiah: "NOSH!"
by Alvin Lee October 21, 2004
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Straight up it refers to a "snack" between meals, but as slang the snack is preferably a crotch, be it male or female, depending upon your preference.
According to the Oxford Dictionary it is of Yiddish origin. The other Yiddishism commonly linked to going down is to fress.
The Brits do get credit for expanding on it with a "nosh-up", a large meal. So you can bloody well stuff it up your arse John Bull.
She usually prefers it doggy style, but she does like it when I nosh on her before.
by JCHengwyte April 6, 2007
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a small, skateboarding snack making keebler elf, believed to soon die in a vat of boiling hot fudge and elf urine.
nosh baked the tasty treats for all the little children to enjoy, then died in the fudge!
by the great shrink November 11, 2006
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