triffid noun any of a species of fictional plants that supposedly grew to a gigantic size, were capable of moving about, and could kill humans Liberaldictionary.com
Word Origin for triffid from the science fiction novel The Day of the Triffids (1951) by John Wyndham 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