toe the 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 line

A clear distinction in the context of a legal, moral, ethical, or analytical judgment.

cross the line

To overstep a boundary, rule, or limit; to go too far or do something unacceptable.

dip a toe into

Alternative form of dip one's toe in.

dip one's toe in

To explore or begin; to enter or get involved in tentatively and for the first time.

draw a line

To delimit a boundary or border.