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• Bribe
• Cream cheese serving
• (slang) a batch of things that go together
• Bagel extra, in deli-speak
• Amount of cream cheese
• Dab, as cream cheese on a bagel
• Lay on thick, as cream cheese on a bagel

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1961, "bribery," from Yiddish shmir "spread," from shmirn "to grease, smear," from Middle High German smiren, from Old High German smirwen "to smear" (see smear (v.); compare slang to grease (someone's) palm "to bribe"). Phrase the whole schmear "the entire ...

Wiktionary Word definitions in Wiktionary
n. 1 A spread that goes on a bagel 2 A batch of things that go together 3 An aggregate vb. To spread something (often a schmear in the first noun sense)