outline map; blank map; base map
A map showing only outlines, borders, or basic features, without detailed labels or data; used for educational exercises, planning, or as a base layer.
In geography class, we wrote country names on an outline map.
I printed a blank map to plan the trip.
Compound of 白 (haku, 'white' or 'blank') and 地図 (chizu, 'map'), literally 'blank map'.