trig pointBrE/ˈtrɪɡ pɔɪnt/NAmE/ˈtrɪɡ pɔɪnt/ (also triˌanguˈlation point) noun (specialist) apositiononahighplaceusedasareference point, especially by people who make and use maps. It is usually marked on the ground by a short stone pillar(地图制作和使用者设的)三角点