I would think toned would be someone who is just lightly muscled, maybe someone who just has a single defined muscles group like toned abs as apposed to someone who is muscular throughout their body, but I have some doubts that we need such tags.
Toned female is a pretty tiny tag really, and toned isn’t really terribly large for a tag that’s at minimum five years old when you consider the amount of images tagged with muscles, abs, biceps and the like.
Furthermore, looking through the toned female tag, provided my assertion that it best covers lightly muscled characters is found to be accurate, then there’s a lot of overlap with muscular female as it’s tagged right now which in my mind brings into question the tag’s usefulness.
Looking at the toned tag on it’s own, I may be mistaken, but it looks like it’s almost all abs on otherwise fit characters. With that in mind, I wonder if we’d be better served renaming the toned tag to something like ‘toned abs’ for characters who just have defined abs and go ahead with the original suggestion of this thread and alias toned female to muscular female as it seems to be fairly redundant.