1. (n.)blood the red fluid that circulates through the heart, arteries, and veins of vertebrates, consisting of plasma in which red blood cells, whiteblood cells, and platelets are suspended.
2. blood a comparable circulating fluid in many invertebrates.
3. blood the vital principle; life.
4. blood a person or group regarded as a source of vitality: The company needs new blood.
5. blood one of the four elemental bodily humors of medieval physiology, regarded as causingcheerfulness.
19. blood bad blood, longstanding mutual animosity.
20. blood in cold blood, with malign and merciless lack of feeling.
21. blood taste blood, to experience a new, usu. violent or destructive sensation and acquire an appetite for it.
Etymology: (bef. 1000; ME blo(o)d, OE blōd; c. OFris, OS blōd, OHG bluot, ON blōth, Go bloth)
Definition of 'blood'
Princeton's WordNet
1. (noun)blood the fluid (red in vertebrates) that is pumped through the body by the heart and contains plasma, blood cells, and platelets "blood carries oxygen and nutrients to the tissues and carries away waste products"; "the ancients believed that blood was the seat of the emotions"
3. (noun)rake, rakehell, profligate, rip, blood, roue a dissolute man in fashionable society
4. (noun)lineage, line, line of descent, descent, bloodline, blood line, blood, pedigree, ancestry, origin, parentage, stemma, stock the descendants of one individual "his entire lineage has been warriors"
5. (verb)blood people viewed as members of a group "we need more young blood in this organization"
6. (verb)blood smear with blood, as in a hunting initiation rite, where the face of a person is smeared with the blood of the kill
1. (noun)blood a red liquid in the body a blood sample
2. blood give blood to give your blood to help others
3. blood family or relatives to have Scottish blood
4. blood blood and guts violence and killing movies that are all blood and guts
5. blood in your blood natural to you Dancing is in her blood.
6. blood new/fresh blood new members of a group with new and interesting ideas
Definition of 'blood'
Webster Dictionary
1. (noun)blood the fluid which circulates in the principal vascular system of animals, carrying nourishment to all parts of the body, and bringing away waste products to be excreted. See under Arterial
2. (noun)blood relationship by descent from a common ancestor; consanguinity; kinship
3. (noun)blood descent; lineage; especially, honorable birth; the highest royallineage
Definitions of blood 
Afrikaans: bloed
Arabic: دَمٌ
Bulgarian: кръв
Brazilian: sangue
Czech: krev
German: das Blut
Danish: blod
Greek: αίμα
Spanish: sangre
Estonian: veri
Farsi: خون
Finnish: veri
French: sang
Hebrew: דַם
Hindi: रक्त, खून, लहू
Croatian: krv
Hungarian: vér
Indonesian: darah
Icelandic: blóð
Italian: sangue
Japanese: 血
Korean: 피, 혈액
Lithuanian: kraujas
Latvian: asinis
Malay: darah
Dutch: bloed
Norwegian: blod
Polish: krew
Persian: خون
Pashto: وینه
Portuguese: sangue
Romanian: sânge
Russian: кровь
Slovak: krv
Slovenian: kri
Serbian: krv
Swedish: blod
Thai: เลือด
Turkish: kan
Taiwanese: 血液
Ukrainian: кров
Urdu: خون ، دم
Vietnamese: máu
Chinese: 血液
