As posted by Three Years of Hell,
In the great state of Illinois, this is now settled law:
The judges backed the lower court decision to dismiss the fraud and theft claims [regarding a woman's decision to keep the output of oral sex and later use it to impregnate herself], agreeing with Irons that she didn't steal the sperm.
"She asserts that when plaintiff 'delivered' his sperm, it was a gift -- an absolute and irrevocable transfer of title to property from a donor to a donee," the decision said. "There was no agreement that the original deposit would be returned upon request."
It would seem that "deposit" is the right word..