I take that back... From ComicVine: "One day it occurred to Gail Simone, a comic book writer, that women in comics are so commonly misused to define a story when one of her favorite female character was killed off. She decided to call this term "Women in Refrigerators," after a panel in the Green Lantern #54 (1994) comic book, in which the Kyle Rayner comes home to his apartment and discovers that his girlfriend, Alex DeWitt, was killed by a villain named Major Force, and then stuffed in a refrigerator. Gail says that she realizes that some that are on the list have been revived already, but the question remains why they had to suffer in the first place."
Still a plot device, in many cases used to show how bad villain is, or empathy for the hero, but it pretty much is anytime a woman is mis-used. Now, I have a better understanding. KillerZ wins.
It's a plot device. Killed doesn't necessarily mean you're on the list, Calvin hit it on the head with this.
Hawkingbird's right, Women in Refrigerators is a list of female characters who are "used" in the plots being tortured or killed to to make us feel sorry for the male superhero and/or to show us how bad the villan really is.
It may say killed on the site, but it's not meant in a way where every woman that gets hurt or dies is an example of WiR