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schlong

or shlong

[shlong]
noun Slang: Vulgar.
  1. the penis.

Origin of schlong

< Yiddish shlang literally, ‘serpent’ < Middle High German slange < Old High German slango
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for schlong

schlong

noun
  1. US a slang word for penis
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for schlong
n.

"penis," 1969, from Yiddish shlang, literally "snake."

Online Etymology Dictionary, © 2010 Douglas Harper