Dang, going absolutely ham with these forum posts today. This was brought up in topic #17508, but seeing as that topic is about a mass rename, this probably should have its own topic.
Looking at the tag pov_crotch, the overwhelming majority depict what the tag sounds like it would be, an analogous tag to pov_hands - an image depicting a scene through the point of view of a character (or the viewer) in which their own crotch is visible. As it stands, the wiki definition sounds like it is describing something along the lines of a "crotch focus" tag.
Seeing as most of the posts are depicting an actual pov_crotch as the name would imply, I think it would make sense to change the wiki definition to align with what the tag is actually being used for. As for the images that actually do adhere to the wiki definition, (which, after browsing through the tag, isn't a whole bunch), I feel like it would be easier to manually retag those instances as "crotch focus" or something among the lines of that. (I am currently unemployed and have an abundance of free time and volunteer to take that duty upon myself to do that if necessary!)