Translation of "Flask" in Japanese

Or... I could use my flask

もしくは 水筒を使う

This flask... seems be taking my weight.

水筒が― 体重を支えてる

You want me to rappel... off this little flask?

小さな水筒を使い ロープで下りたいか

[Bear] That flask would've been a much better way down.

水筒のほうがよかった

No, Yumi put it in a thermos flask and brought it into the club room.

ううん、由美ちゃんが魔法瓶に入れて、部室に持って来てくれたの。

Put the flask through it, tighten that up, and then we're just simply gonna bury that down there.

水筒に巻いてキツくしめる あとはこの下に埋めるだけさ

In the cold season when you want to drink something hot I recommend this sort of thermos flask.

寒い時期にあったかい飲物が欲しい時にはこういった魔法瓶がお薦め。