水道|すいどうsuidou[0]heiban (flat)
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- nounwater supply; water service; waterworks; tap water
- nounchannel; strait
- nounwater course; waterway
- Synonym水路すいろNeutralA passage along which water flows, as in 「用水路」, or a marked swimming lane; it does not mean tap water. Neutral in register.
- Related運河うんがWrittenA canal dug artificially for ships to pass through, as in 「パナマ運河」; it has nothing to do with water supply. A written/formal word.
For tap water or a strait, 「水道」 is the default choice. Use 「運河」 for a man-made shipping canal and 「水路」 for a water channel or swimming lane.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


