adv. phr. 1. As you would expect; naturally. Bob hit Herman, and Herman hit him back, of course. The rain came pouring down, and of course the track meet was canceled. 2. Without a doubt; certainly; surely. Of course you know that girl; she's in your class.
OF COURSE
Meaning of OF COURSE in English
American idioms English vocabulary. Английский словарь американских идиом. 2012