(idiomatic) To set a boundary, rule, or limit, especially on what one will tolerate.

(idiomatic, often figuratively) To delimit a boundary or border.

present participle of draw the line

Third-person singular simple present indicative form of draw the line

To deem (a matter, especially a problematic one) to be now closed or concluded.

(intransitive) To lay down a challenge; to provide a test of commitment (often one which carries a high risk) to a cause.

present participle of draw a line in the sand

Third-person singular simple present indicative form of draw a line in the sand