markingline

noun
UK /ˈmɑːkɪŋ laɪn/
US /ˈmɑːrkɪŋ laɪn/

A marking line is a line drawn to show where something is or where you should go.

The teacher drew a marking line on the field so we knew where to stand.


OTHER MEANINGS

2. A line used to mark a boundary on a sports field.

The players stood behind the marking line before the race began.

3. A line printed on paper to help you write or cut neatly.

Cut along the marking line to make a straight edge.

4. A line that shows where something has been measured or checked.

The inspector left a marking line on the wall to show the height.