Small fleshy flap of tissue at the back of the throat; an extension of the soft palate (5)
I believe the answer is:
uvula
(Other definitions for uvula that I've seen before include "Fleshy body over back of tongue" , "Fleshy piece hanging over the throat" , "Fleshy part of the palate" , "Fleshy body at back of throat" , "Fleshy flap" .)