Someone with a lot of authority, power, or influence in a group or organization. You'll only get a truthful answer if you manage to talk to the brass hats.
有人用一组或组织中大量权威,权力或影响的。如果你设法跟黄铜帽子你只会得到一个真实的回答。
When I was a brass hat, I used to charge the most outrageous things to the company credit card.