estuary

Từ điển WordNet v3.1 - WordNet Dictionary

noun

the wide part of a river where it nears the sea;
fresh and salt water mix (Freq. 1)
• Derivationally related forms:
estuarial
• Hypernyms:
body of water, water
• Hyponyms:
firth
• Instance Hyponyms:
Humber, Para, Para River, Rio de la Plata, La Plata, Plata River
• Part Holonyms:
river