One who habitually takes advantage of the generosity of others; a parasite.
(slang) A person who lives by begging or by sponging off others.
Origin of schnorrer
- Yiddish shnorer beggar, sponger from shnorn to beg from Middle High German snurren to hum, whir (from the sound of the musical instrument played by beggars)
From American Heritage Dictionary of the English Language, 5th Edition