海陆空 hǎilùkōng land, sea, and air Origin Definitions Defs Strokes Stroke Words Sentences Sents 海 hǎi noun sea ocean or sea; large bodies of water including salt lakes or large inland lakes陆 陸 lù nounverb land (bound form) land as opposed to water or air; land routes空 kōng noun sky (bound form) the sky; outer space; the air