A line drawn or imagined down the middle of something, used as a reference for alignment or division.
From 'center' plus 'line,' combining two basic spatial concepts. This technical term became standard in engineering, architecture, and road design in the 19th-20th centuries.
The yellow centerline on a road is one of those inventions so simple and effective that we barely notice it, yet it saves thousands of lives by preventing head-on collisions.
Complete word intelligence in one call. Free tier — 50 lookups/day.