Dictionary.com
Thesaurus.com

scolex

American  
[skoh-leks] / ˈskoʊ lɛks /

noun

Zoology.

plural

scoleces, scolices
  1. the anterior, headlike segment of a tapeworm, having suckers, hooks, or the like, for attachment.


scolex British  
/ ˈskəʊlɛks /

noun

  1. the headlike part of a tapeworm, bearing hooks and suckers by which the animal is attached to the tissues of its host

"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

Etymology

Origin of scolex

First recorded in 1850–55, scolex is from the Greek word skṓlēx worm