A loose fold of skin hanging from the neck or throat of certain birds, lizards, etc. (6)
I believe the answer is:
wattle
(Other definitions for wattle that I've seen before include "(Turkey's) loose flesh" , "gets covered with daubing" , "-- and daub, building material" , "Material for making fences, roofing etc -- Australian acacia" , "Material for fences, roofs etc - it hangs from a turkey's throat" .)