thigh

nouns

the part of the leg between the hip and the knee
thigh
is a part of
a human limb; commonly used to refer to a whole limb but technically only the part of the limb between the knee and ankle
leg
is a type of (narrower)
one of the jointed appendages of an animal used for locomotion or grasping: arm; leg; wing; flipper
limb
the upper joint of the leg of a fowl
second joint, thigh