A person’s or thing’s first appearance before society or another audience; one’s “maiden voyage”.
To make one's début.
The act of penetrating a given situation with the mind or faculties; perception, discernment.
Specifically, the insertion of the penis (or similar object) during sexual intercourse.
The act of penetrating something.
A number or fraction that represents how many cards/decks will be dealt before shuffling, in contrast to the total number of cards/decks in play.
The proportion of the target audience who buy the advertised product or service.