woolly spider monkey Syllabification: (wool·ly spi·der mon·key)Definition of woolly spider monkey noun a large spider monkey with long thin limbs and tail, dense woolly fur, and a large protruding belly, native to the rain forests of southeastern Brazil. Brachyteles arachnoides, family Cebidae woolly spider monkey in other Oxford dictionaries Definition of woolly spider monkey in the British & World English dictionary