spondulicks

英 [spɒn'djuːlɪks] 美

spondulicks (n.): 1856, American English slang, "money, cash," of unknown origin, said to be from Greek spondylikos, from spondylos, a seashell used as currency (the Greek word means literally "vertebra"). "[U]sed by Mark Twain and by O. Henry and since then adopted into British English" [Barnhart], where it survived after having faded in the U.S.