n. Excessive development of breasts in males, resembling the breast development in women.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. excessive development of the breasts in males; usually the result of hormonal imbalance or treatment with certain drugs (including some antihypertensives)
Word Usage
"For example, nearly 75% of the 18,000 men who underwent a procedure known as gynecomastia—male breast reduction—were between the ages of 13 and 19."