water chestnut
US /ˈwɑː.t̬ɚ ˌtʃes.nʌt/
UK /ˈwɑː.t̬ɚ ˌtʃes.nʌt/

1.
castanha-d'água
the crisp, white, edible tuber of an aquatic plant, used in Asian cooking
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I love the crunch of water chestnuts in stir-fries.
Adoro a crocância das castanhas-d'água em refogados.
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The recipe calls for sliced water chestnuts.
A receita pede castanhas-d'água fatiadas.