triffid

noun
  1. any of a species of fictional plants that supposedly grew to a gigantic size, were capable of moving about, and could kill humans

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