Firstly, the Definition of adult-use: eg. ”for Adult use only.”
Given these points, A synonym of recreational uses by few states to explain cannabis centres or dispensaries is to serve patrons above 21.
For example, Adult movies, adult stores, adult paraphernalia, adult clothes are all prime examples of the meaning of adult use. Often, these terms emphasise a term that the noun is purely for adults only. Things like porn is a common adult-only genre that anyone underage is restricted or not actually allowed to watch.
All in all, many of these establishments are relating to explicit content or items which are not intended for anyone under the age of 21. This is because