1. To utter suddenly and passionately; to exclaim; to utter impulsively: "He blurted out (ejaculated) the secret." or to ejaculate a prayer.
2. To eject or discharge abruptly and swiftly; to expel suddenly; such as, a dart, especially, to discharge or eject fluids from the body.
3. From ex-, "out" plus jaculari, "to throw, to dart", from jaculum "javelin", from jacere, "to throw." Only other surviving sense is "exclaim suddenly" (1666).