a member of one of the ethnic groups in central Africa and southeast Asia, whose members are unusually short in stature/height;
e.g. The Pygmy led the group into the forest.
(noun)
in derogatory usage, a person, animal, or thing that is very small; a person who is considered insignificant due to their deficiencies in a particular respect;
e.g. They considered him an intellectual pygmy because he was not as good as the others in school.