Where Does Toeing the Line Come from?

The most likely origin of the term goes back to the wooden decked ships of the Royal Navy during the late 17th or early 18th century. Barefooted seamen had to stand at attention for inspection and had to line up on deck along the seams of the wooden planks, hence to "toe the line".

Is it towed the line or toed the line?

Reminder: The idiom meaning “to do what is expected” or “to follow the established rules” is correctly spelled “toe the line.” It's an expression that was once used at the start of a race, when runners were called to step into the ready position with their toes on the starting line.

What does the expression toeing the line mean?

Meet a standard, abide by the rules, as in The new director will make us toe the line, I'm sure, or At daycare Brian has to toe the mark, but at home his mother's quite lenient. This idiom refers to runners in a race placing their toes on the starting line and not moving until the starting signal.