This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
There’s no such thing.
The general meanings were already applied to software before he shouted to the heavens that he owned the term. Any valid use of the word free is exactly as correct when applied to software.