also: ど
noun
A literary or formal noun for a way, route, or course. In everyday speech, 道 or more specific words are usually more natural; 途 is especially familiar as a kanji element in compounds.
旅人たちは山を越える途を急いだ。
The travelers hurried along the route over the mountains.
都へ向かう途は遠かった。
The way to the capital was long.
Attested but marked as obsolete kana usage; not the normal modern reading for this word.
The ordinary everyday word for a road, path, or way; 途 is more literary and Sino-Japanese in feel.
A practical or technical word for a route or path taken, such as a travel route, transmission path, or process route.
A compound using the same kanji, meaning 'on the way' or 'in the course of'; much more common than standalone 途 in modern prose.
The kanji 途 is conventionally associated with a road, route, or course. The standalone noun uses the Sino-Japanese-style reading と; also lists obsolete ど. No more specific historical derivation is supplied here.