海口 hǎikǒu estuary Definitions Defs Origin Strokes Stroke Words Sentences Sents hǎikǒu estuary · seaport · Haikou 海 hǎi noun sea ocean or sea; large bodies of water including salt lakes or large inland lakes口 kǒu noun gateway entrance, exit, or pass, such as a mountain pass, port, or gate in the Great Wallhǎikǒu bragging 海 hǎi huge great in capacity; extraordinary口 kǒu nounverb speech speech; words; one's tone of voice or accenthǎikǒu large mouth 海 hǎi huge great in capacity; extraordinary口 kǒu noun mouth mouth of a person or animal; (bound form) oral