1. fundamental rule; essential point; main principle
E.g.: 綱要 (outline), 大綱 (general principles)
2. moral principles; the path one should follow
E.g.: 綱常 (moral principles)
3. rope; large rope
E.g.: 綱維 (rope or cordage structure)
4. major category in a classification
E.g.: 綱目 (main point and details)