travel mug; flask
A portable container for hot or cold drinks, typically with a lid, used while traveling or commuting.
毎朝、トラベルマグにコーヒーを入れて会社に行く。
Every morning, I put coffee in my travel mug and go to the office.
Variant with interpunct; less common but seen in some contexts.
Loanword from English 'travel mug'.