道

The glyph operates on a spectrum from the concrete to the abstract:

• Physical: A road, path, street, or route.
• Technical/Procedural: A method, way of doing something, or a specific procedure.
• Ethical/Metaphysical: Morality, the "right path," or the cosmic order/principle.

• Noun: Path, method, principle.
• Verb: To speak, tell, articulate, or expound (often implying systematic exposition); to lead or guide.
• Measure Word/Classifier: Used for roads and paths; in later texts, used for streaks or lines (e.g., a row of objects, a streak of light).

• 道 vs. 路: While both relate to paths, 路 typically refers to the physical surface (dirt, stone), whereas 道 refers to the route, direction, or underlying principle.
• The 道之 Ambiguity: In constructions such as 道之, there is a functional ambiguity between "explain/speak of it" and "lead him/it."

Tang-period reading: //dhɑ̀u //dhɑ̌u.

Be alert to the verbal functions of this glyph, as they are frequently overlooked in favor of noun senses. When translating 道 as a verb of communication, note that it often suggests a more systematic explanation or laying out of truth than 說. In contexts involving "leading" or "guiding," be aware that this function is often subsumed by 導 in other texts.