verb

• (transitive) To eject abruptly; to throw out suddenly and swiftly.
  "The mighty Magnet from the Center darts / This ſtrong, tho' ſubtile Force, thro' all the Parts: / Its active Rays ejaculated thence, / Irradiate all the wide Circumference."
• (dated, intransitive) To say abruptly.
  "Vigors almost bounded on the pavement at the mention of the name; and he ejaculated, "It is he of whom I am in search ! But why do you ask? Is it possible that—""
• (biology, transitive) To eject or suddenly throw fluid or some other substance from a duct or other body structure.
  "The spermatophores begin to ejaculate immediately after leaving the penis and the whole process is completed in a very few seconds. Pulling the filament attached to the ejaculatory end of a spermatophore is all that is needed to start its ejaculation."
• (specifically, transitive and intransitive) Of a human being or other mammal: to forcibly eject from the urethra in response to sexual stimulation, in a male, semen; and, in a female, vaginal fluid.
  "Men can ejaculate between 0.1 and 10 milliliters of semen on average."