Not really. I've never defined it beyond that. Capitalism is not s government structure. Capitalism is just the system that allows for free markets and private capital ownership.
By system I guess I mean government policies that allow it. It is not itself a government structure like a republic, or a dictatorship, etc. Different governments can allow capitalism.
Free markets, or at least less market intervention than non-capitalist nations. I dont think we ever see total capitalism. We just see a liberal capitalism.