snake·head (sn?k?h?d?)n.1. Any of various edible freshwater predatory fishes of the family Channidae, having an elongated body with long dorsal and anal fins and large scales on the head, native to Asia and Africa and established elsewhere.2. See turtlehead.3. Slang A person who smuggles undocumented Chinese immigrants into the United States and other countries.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.snakehead (?sne?k?hed) n (Law) a Chinese criminal involved in the illegal transport of Chinese citizens to other parts of the world[C20: origin uncertain]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014snake?head (?sne?k?h?d) n. a turtlehead plant. [1775?85, Amer.] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.