toe the line 

To do what is expected of one.

She decided to toe the line rather than disobey her parents.

toe the line by D_C March 23, 2004

toe the line 

To stay in order, be obedient.
Origin: From the line in the House of Commons which members must stay behind during session. "Toe the line" is to conform to the rules.

Synonyms:
Mind one's p's and q's
Straight and narrow.

toe the line by Dizz March 22, 2004

toe the line 

To behave according to strict rules. Sometimes an order given, especially to a child.

Somewhat archaic.

Angry father: "You'd better toe the line this time, mister, or next time I catch you tattooing your sister's name on shaved dogs you'll be grounded for a month!"

toe the line by Athene Airheart March 20, 2004