Pinup (noun)

1. A photograph or poster of a sexually attractive person, typically a woman, that is displayed on a wall.
2. A person, typically a woman, who is the subject of a pinup photograph or poster.

Origin:

Pinup comes from the word "pin" meaning "attach" and "up" meaning "to display".

Examples:

1. The pinup girl on the wall was a popular subject among the soldiers.
2. He had a pinup of Marilyn Monroe in his locker.
3. The pinup was a popular form of entertainment during World War II.
4. She wanted to be a pinup model.
5. The pinup girls adorned the walls of many a young man's bedroom.