Line

cross the line

Meaning: behave in a way that is not acceptable

Example: This newspaper has crossed the line. This article is so offensive to so many people. Read on

outside the lines

Meaning: not sticking to the rules

Example: I never thought they would be allowed to do their duties outside the lines. Read on

line in the sand

Meaning: a boundary beyond which one cannot proceed without consequences

Example: His resolve to either get a paid internship or drop out of school was his line in the sand. Read on

drop a line

drop a line Meaning: - send a brief letter - to call over telephone - send an email, etc. - send any kind of moral short letter or ... Read on