土管（どかん、dokan）
- clay pipe

The Japanese word 土管 (どかん - dokan) refers to a large, often cylindrical, pipe made of 土 (ど - do, "earth" or "soil") or concrete. They are primarily used for drainage, sewage, or to carry water under roads, railways, or other obstacles. 土管s can also be made of other materials.

⚫︎ あの土管の中に入って遊ぼう！ Translation: Let's play inside that pipe! ⚫︎ 古い土管が道路の脇に放置されていた。 Translation: Old pipes were left abandoned beside the road. ⚫︎ 雨水は土管を通って川に流れる。 Translation: Rainwater flows to the river through the pipes.

This word is commonly used in everyday conversation to describe these types of pipes. It’s a straightforward and descriptive term. It can be used in both formal and informal settings, although its context is usually more related to infrastructure or construction. You could also use the word when talking about games.

The word is typically written in kanji as 土管, where 土 means "earth" and 管 means "pipe." The reading is どかん (dokan) in hiragana. There are no other common ways to write this word. The okurigana is standard.

While there aren't direct synonyms that fully replace 土管, you could use more general terms depending on the context: ⚫︎ パイプ (paipu) - pipe ⚫︎ 管 (かん - kan) - pipe (more formal) ⚫︎ 下水道管 (げすいどうかん - gesuidoukan) - sewer pipe

There aren't specific antonyms, as 土管 is a descriptive term for a type of object.

工事現場で巨大な土管が運ばれていた。 ・Translation: A huge pipe was being transported at the construction site. ・Explanation: This sentence describes the use of 土管 in a construction context.

子供たちは土管の中でかくれんぼをしていた。 ・Translation: The children were playing hide-and-seek inside the pipes. ・Explanation: This sentence illustrates a playful use of 土管.

The word 土管 is a compound word. 土 (do) means "earth" or "soil," and 管 (kan) means "pipe" or "tube." Therefore, 土管 literally translates to "earth pipe" or "earthen pipe," reflecting its original material.