Webster's English Dictionary

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carotid

ca.rot.id \k*-'ra:t-*d\ aj [F or Gk; F carotide, fr. Gk karo-tides carotid 
   arteries, fr. Xkaroun to stupefy; akin to Gk kara head : of, relating to, 
   or being the chief artery or pair of arteries that pas s up the neck and 
   supply the head - carotid n