Gyoza (dumplings) that are boiled rather than pan-fried; often served in soup or with dipping sauce.
寒い日は熱いスープと一緒に水餃子を食べるとおいしい。
On cold days, boiled gyoza with hot soup is delicious.
この店の名物はニラ入りの水餃子だ。
This restaurant's specialty is water gyoza with chives.
夕食は鍋に水餃子を入れて簡単に済ませた。
For dinner I simply put boiled gyoza into the hot pot.