macropenis

plural macropenises

1. medicineAn abnormally large penis.

   Boys develop a macropenis usually by 2 to 3 years of age and undergo premature sexual development with growth of pubic and axillary hair and appearance of adult body odor[…]

   2002, Ronald G. Davidson, PDQ Medical Genetics, page 88

   1 more example

   Russell-Silver syndrome […] is characterised by IUGR, small triangular facies, hemihypertrophy, clinodactyly, occasionally macropenis with or without precocious puberty, and sometimes GH deficiency.

   2001, Desai, Meena P., Vijayalakshmi Bhatia & P.S.N. Menon, Pediatric Endocrine Disorders, page 60

   Synonyms: macrophallus, megalophallus, megalopenis, megaphallus, megapenis, cunt buster, donkey cock, donkey dick · Antonyms: micropenis