neatline

noun
UK /ˈniːtlaɪn/
US /ˈniːtlaɪn/

A neatline is the thin border line drawn around a map or chart.

The old map had a decorative neatline framing the whole picture.


OTHER MEANINGS

2. The inner edge of a printed map where the map content ends and the margin begins.

The coordinates were printed just inside the neatline.

3. A line used in printing or drafting to mark the exact edge of a page or plate.

The printer aligned the image to the neatline before cutting.

4. The rectangular boundary enclosing the mapped area on a nautical chart.

Sailors checked the neatline to confirm the chart's coverage.