呕心血 ǒuxīnxuè to take great pains Origin Definitions Defs Strokes Stroke Words Sentences Sents 呕 嘔 ǒu verbnoun to vomit to vomit; to throw up心 xīn noun heart the physical organ that pumps blood; refers to the chest area where the heart is located血 xuè noun blood The red fluid that circulates in the heart and blood vessels; used in formal contexts, compounds, or when used alone in spoken language.