bright line

blur the line

To minimize or erode the distinction between two things.

bottom line

The summary or result; the most important information.

bottom of the line

The worst or lowest quality on the market, especially among a range of products.

bright and early

(Very) early in the morning.

bright lights

The glamour and glitz of a place, especially a big city.

bright side

A consoling aspect of a difficult situation.

bright spark

A person who is intelligent, clever or quick-witted.

bright young thing

One who is youthful, clever, eager, and high-spirited in manner and attractive in appearance.