Lewis Short
testĭcŭlus (noun M) : dim.2. testis
* A testicle.
* Lit., Auct. Her. 3, 20, 33; Juv. 6, 339; Mart. 3, 24, 5; Cels. 7, 18.
* Transf., as a designation of manly vigor, manliness: haec fierent, si testiculi vena ulla paterni Viveret in nobis?Pers. 1, 103.
* The name of a plant, App. Herb. 15.
Charlton T. Lewis, Charles Short, A Latin Dictionary