Snake that might be seen around neck? (3)
I believe the answer is:
boa
I believe this clue is a double definition.
'snake' is the first definition.
(I know that boa is a type of constrictor)
'that might be seen around neck?' is the second definition.
(boa can mean a type of scarf)
(Other definitions for boa that I've seen before include "feathers around the neck?" , "native American" , "Non-venomous snake" , "strangler" , "One with scaly body" .)