I used to bowl a lot. In high school, we would visit O'Connor Bowl on Islington Avenue during lunch. That's long gone, if you're looking for it, but it used to be between Bloor and Norseman. I think they built townhouses there.
The primary bowling spot, however, was Bowlerama on Dundas Street West near Highway 427. That was sort of our home alley, if you will. Here's an ad for the chain that aired in these parts in the early 80s. Yes, that voice is Mark Daley, who is in fact Everywhere.