flavored water
Wasei-eigo term for water infused with fruit, herbs, or other natural flavors, often served as a refreshing non-alcoholic drink.
wasei-eigo (Japanese-coined English), from flavor water
I ordered flavored water at the restaurant.
Lemon and mint flavored water is popular in summer.
Variant with interpunct; less common but still seen.
Wasei-eigo from English 'flavor water', referring to water infused with fruit, herbs, or other flavorings.