A rivet is a permanent mechanical fastener.

Of course, the Queen goes to her stud often to watch her horses ...

I can't stand being treated like a stud or when they tell me it'd be cool if we all wore kilts...without underpants of course...

But if you can clone that horse, you can have both the advantage of having a gelding run in the race and his identical genetic duplicate can then be put out to stud.

So here is a typical stud wall, an architectural construction, and this is a section of our proposal for a meat house, where you can see we use fatty cells as insulation, cilia for dealing with wind loads and sphincter muscles for the doors and windows.