| 1. | the fluid that circulates in the principal vascular system of human beings and other vertebrates, in humans consisting of plasma in which the red blood cells, white blood cells, and platelets are suspended. |
| 2. | the vital principle; life: The excitement had got into the very blood of the nation. |
| 3. | a person or group regarded as a source of energy, vitality, or vigor: It's time we got some new blood in this company. |
| 4. | one of the four elemental bodily humors of medieval physiology, regarded as causing cheerfulness. |
| 5. | bloodshed; gore; slaughter; murder: to avenge the blood of his father. |
| 6. | the juice or sap of plants: the blood of the grape. |
| 7. | temperament; state of mind: a person of hot blood. |
| 8. | physical nature of human beings: the frailty of our blood. |
| 9. | Chiefly British. a high-spirited dandy; an adventuresome youth: the young bloods of Cambridge. |
| 10. | a profligate or rake. |
| 11. | physical and cultural extraction: It was a trait that seemed to be in their blood. |
| 12. | royal extraction: a prince of the blood. |
| 13. | descent from a common ancestor; ancestry; lineage: related by blood. |
| 14. | recorded and respected ancestry; purebred breeding. |
| 15. | Slang. a black person, esp. a man. |
| 16. | Hunting. to give (hounds) a first sight or taste of blood. Compare flesh (def. 14). |
| 17. | to stain with blood. |
| 18. | get or have one's blood up, to become or be enraged or impassioned: Injustice of any sort always gets my blood up. |
| 19. | have someone's blood on one's head or hands, to be to blame for someone's affliction or death: Though a criminal, he had no blood on his hands. |
| 20. | in cold blood, deliberately; ruthlessly: The dictator, in cold blood, ordered the execution of all his political enemies. |
| 21. | make one's blood boil, to inspire resentment, anger, or indignation: Such carelessness makes my blood boil. |
| 22. | make one's blood run cold, to fill with terror; frighten: The dark, deserted street in that unfamiliar neighborhood made her blood run cold. |
| 23. | sweat blood. sweat (def. 37). |
| 24. | taste blood, to experience a new sensation, usually a violent or destructive one, and acquire an appetite for it: Once the team had tasted blood, there was no preventing them from winning by a wide margin. |

The fluid circulating through the heart, arteries, veins, and capillaries of the circulatory system. Blood carries oxygen and nutrients to the cells of the body and removes waste materials and carbon dioxide. It is composed of plasma (mainly water, but with a mixture of hormones, nutrients, gases, antibodies, and wastes), red blood cells (which carry oxygen), white blood cells (which help combat infection), and platelets (which help the blood clot).
blood
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blood (brother)
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blood (blŭd)
n.
The fluid consisting of plasma, red blood cells, white blood cells, and platelets that is circulated by the heart through the arteries and veins, carrying oxygen and nutrients to and waste materials away from all body tissues.
One of the four humors of ancient and medieval physiology, identified with the blood found in the blood vessels, and believed to cause cheerfulness.
Descent from a common ancestor; parental lineage.
Blood
(1.) As food, prohibited in Gen. 9:4, where the use of animal food is first allowed. Comp. Deut. 12:23; Lev. 3:17; 7:26; 17:10-14. The injunction to abstain from blood is renewed in the decree of the council of Jerusalem (Acts 15:29). It has been held by some, and we think correctly, that this law of prohibition was only ceremonial and temporary; while others regard it as still binding on all. Blood was eaten by the Israelites after the battle of Gilboa (1 Sam. 14:32-34). (2.) The blood of sacrifices was caught by the priest in a basin, and then sprinkled seven times on the altar; that of the passover on the doorposts and lintels of the houses (Ex. 12; Lev. 4:5-7; 16:14-19). At the giving of the law (Ex. 24:8) the blood of the sacrifices was sprinkled on the people as well as on the altar, and thus the people were consecrated to God, or entered into covenant with him, hence the blood of the covenant (Matt. 26:28; Heb. 9:19, 20; 10:29; 13:20). (3.) Human blood. The murderer was to be punished (Gen. 9:5). The blood of the murdered "crieth for vengeance" (Gen. 4:10). The "avenger of blood" was the nearest relative of the murdered, and he was required to avenge his death (Num. 35:24, 27). No satisfaction could be made for the guilt of murder (Num. 35:31). (4.) Blood used metaphorically to denote race (Acts 17:26), and as a symbol of slaughter (Isa. 34:3). To "wash the feet in blood" means to gain a great victory (Ps. 58:10). Wine, from its red colour, is called "the blood of the grape" (Gen. 49:11). Blood and water issued from our Saviour's side when it was pierced by the Roman soldier (John 19:34). This has led pathologists to the conclusion that the proper cause of Christ's death was rupture of the heart. (Comp. Ps. 69:20.)
blood
In addition to the idiom beginning with blood, also see bad blood; draw blood; flesh and blood; in cold blood; in one's blood; make one's blood boil; make one's blood run cold; new blood; out for (blood); run in the blood (family); scream bloody murder; shed blood; sporting blood; sweat blood. Also see under bleed.