Testosterone
WordNet
noun
(1) A potent androgenic hormone produced chiefly by the testes; responsible for the development of male secondary sex characteristics
WiktionaryText
Noun
- Steroid hormone produced primarily in the testes of the male; it is responsible for the development of secondary sex characteristics in the male.
- Manly behavior, often of an aggressive or foolishly reckless nature.
- Mother encouraged James to rely more on intelligence and less on testosterone to deal with the neighbor's son.