A place where you go to get drunk and/or meet people. You don't got much experience of stuff like that? [Harry realize that maybe pubs doesn't exist in this guys world so he'll try to explain as good as he can] Hm, well a pub is a building along a road. There are different types of pubs. Some are open all day and severs food while others only open late in a day, like 10pm-4am. They often have a dance floor where a DJ plays music you can dance to and all of them has a bar where you can order beer or drinks. [There, that should be a good enough explanation] Oh yeah they're only open for adults due to the alcohol.