WIY: I disagree. One is meant to be a killjoy. Otherwise you’re missing the point.
Toi: I seem to recall that too but I’m pretty sure I’m right about this Tosfos. It’s talking about Binyan in particular. I don’t remember where it is though. I think it’s in Yevamos.
147: Really? Av means father in Farsi and/or ancient Babylonian? It could be, but I don’t think so. All of the months names’ have meaning. They’re just not a language we know. Or did you think that Chazal/Nach/the leaders at the time gave gibberish meanings to the months?