The Chinese word for bay is
海湾

hǎi wān

Chinese Definition

bay
1. 海湾,赤褐色的,湾
2. 由海或湖泊深入岸邊所形成的開放而彎曲的凹處。
Components
海
1. sea; ocean
好想去看海。 - I really want to go and look at the sea.
2. big lake
洱海 - Er Lake
3. (Cantonese) wide river
4. (of containers, amount, etc.) big; large
海碗 - extra large bowl
海量 - huge amount
海投 - to send résumés to many companies; to use shotgun approach in job hunting
海扁 - to beat someone tremendously
5. overseas; abroad
海棗 - date palm
6. (figurative) sea; abundance; infiniteness
人海 - huge crowd
火海 - sea of flames
7. (dialectal, colloquial) profuse; numerous
8. (dialectal, colloquial) unrestrainedly; randomly; casually
9. . Hai (mainland China, Taiwan), Hoi (Hong Kong)
海瑞 - Hai Rui (Chinese scholar-official of the Ming dynasty)
湾
1. Simplified form of 灣

海灣
1. n. (geography) bay; gulf

海湾
1. Simplified form of 海灣

灣
1. (geography) bend in a river
2. (geography) bay; gulf
3. (regional, nautical) to berth; to anchor; to moor
4. usage. In Min Nan, the character 灣 is usually read as oan (e.g. in 臺員.

湾
1. Simplified form of 灣

灣區
1. n. bay area
港珠澳大灣區 - Guangdong-Hong Kong-Macau Greater Bay Area

月桂
1. n. bay laurel (Laurus nobilis)
2. n. (literary, Chinese mythology) sweet osmanthus on the Moon
3. n. (literary, figurative) the Moon; moonlight
4. n. (literary, figurative, historical) passing the imperial examination and winning a title