What does 水筒 mean?
水筒 is a Japanese noun meaning “canteen, flask, water bottle” in English. It is written as 水筒 in kanji, すいとう in hiragana, and suitou in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
水筒にはほとんど水が残っていない。
There is little water left in the canteen.