Dexamethasone is used to treat conditions such as arthritis, blood/hormone/immune system disorders, allergic reactions, certain skin and eye conditions, breathing problems, certain bowel disorders, and certain cancers. It is also used as a test for an adrenal gland disorder (Cushing's syndrome).
The term bar is derived from the specialized counter on which drinks are served. Patrons may sit or stand at the bar and be served by the bartender. Depending on the size of a bar and its approach, alcohol may be served at the bar by bartenders, at tables by servers, or by a combination of the two.
I'm a bartender and as far as I know a dive bar is one that is dirty and the people that patronize it are just as dirty as it is. Physically, mentally, etc. a dive bar is a grimy, dirty, non-pretentious bar, where tough guys with tattoos and mean drunks hang out and posers get the crap beat out of them.