通る
とおる · tooru · JLPT N4 · verb-godan
to go through
🚇 tooru sounds like tour: a tour passes through every stop
通 means pass through or commute, the same kanji as in 交通 (traffic) and 通う (to commute). Tooru is the intransitive one: the thing itself passes by or goes through. Its transitive partner is 通す (toosu), to let something through.
通 — 辵 (辶) walk + 甬 yǒng (phonetic)
通 is a semantic-phonetic compound. The 辶 (chuò) component means 'walk' or 'movement', giving the meaning of going through or passing. 甬 (yǒng), originally depicting a hanging bell or a path, supplies the sound. Together they convey 'to pass through, communicate, connect'.