1.
rush hour: the time in the morning and evening when traffic is the worst because many people are going to work or coming home from work
- I hate rush hour.
- It takes 20 minutes to get there, but if you go at rush hour, then it takes 40 minutes.
2.
downtown: the center or main business part of a city
- I work downtown.
- Our office is downtown.
3.
to take someone out to dinner: to go out to dinner with a person and pay for the dinner
- She took her clients out to dinner.
- If you are a salesman in this industry, then you have to take your customers out to dinner regularly.