thermal container; thermos; rice warmer
Refers to insulated containers for keeping food or drink warm, including wide-mouthed thermoses and electric rice warmers. Often seen in compounds like 電子ジャー.
See also: 電子ジャー
お弁当は保温ジャーに入れて持っていく。
I put my lunch in a thermal container and take it with me.
General term for a jar, often a glass or plastic container with a lid. Less common than sense 1 in everyday Japanese; 瓶 (びん) is more typical for small jars.
クッキーをジャーに入れて保存する。
I store cookies in a jar.
I put the cooked rice into the warmer to keep it warm.
I keep the rice warm in an electric rice warmer so it doesn't get cold.
スープをジャーで保温しておいた。
I kept the soup warm in the thermos.
Use 台 when counting a ジャー as an appliance, e.g. 炊飯ジャー.
electric rice cooker; rice cooker and warmer
electric rice warmer
hot water dispenser; electric water boiler
porringer
Borrowed from English 'jar', with a specialized meaning for thermal containers in Japanese.