seminal vesicle

• IPA^(key): /ˈsɛmɪnəl ˈvɛsɪkəl/

seminal vesicle (plural seminal vesicles)

1. (anatomy) One of two simple tubular glands located behind the male urinary bladder, responsible for the production of about sixty percent of the fluid that ultimately becomes semen.
   • 1969, Kurt Vonnegut, chapter 5, in Slaughterhouse-Five‎, New York: Dial, published 2005, page 151:

     Billy made a noise like a small, rusty hinge. He had just emptied his seminal vesicles into Valencia […]