When I talk about the "content" of my website, I assume that that includes what is published, the html code, the images, the meta tags, and anything else that is a part of the website. Is this correct? Or is content only what the viewer of the website sees?
I don't think that there is a legal definition of the term but generally speaking content can refer to all of the writing that appears on a website. It can also refer to images as well. I don't usually see a website's code and backend programming referred to as content.
I would think that the coding would be considered content too. Or, at least protected from copyright violations --- try to prove that one! If you legally own it, then it is yours. I'll bet most of us can find something that we created lifted from our sites and sitting somewhere else verbatim or with at least some changes to it.