Wordnet 3.0
NOUN (1)
1.
a layer of deeply pigmented grey matter in the midbrain;
associated with the striate body;
is involved in metabolic disturbances associated with Parkinson's disease and with Huntington's disease;
[syn: substantia nigra, nucleus niger, locus niger]
WordNet (r) 3.0 (2006):
nucleus niger
n 1: a layer of deeply pigmented grey matter in the midbrain;
associated with the striate body; is involved in metabolic
disturbances associated with Parkinson's disease and with
Huntington's disease [syn: substantia nigra, nucleus
niger, locus niger]