blood meaning
EN
[blʌd] [-ʌd] 
US UK WBlood
- Blood is a bodily fluid in animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells.
- In vertebrates, it is composed of blood cells suspended in blood plasma.
- Vertebrate blood is bright red when its hemoglobin is oxygenated and dark red when it is deoxygenated. Some animals, such as crustaceans and mollusks, use hemocyanin to carry oxygen, instead of hemoglobin.
- Jawed vertebrates have an adaptive immune system, based largely on white blood cells. White blood cells help to resist infections and parasites. Platelets are important in the clotting of blood.
EN Blood 
- NounPLbloods
- A vital liquid flowing in the bodies of many types of animals that usually conveys nutrients and oxygen. In vertebrates, it is colored red by hemoglobin, is conveyed by arteries and veins, is pumped by the heart and is usually generated in bone marrow.
- The blood flows into the menstrual cup.
- A family relationship due to birth, such as that between siblings; contrasted with relationships due to marriage or adoption (see blood relative, blood relation, by blood).
- (medicine, countable) A blood test or blood sample.
- The sap or juice which flows in or from plants.
- (obsolete) The juice of anything, especially if red.
- (obsolete) Temper of mind; disposition; state of the passions.
- (obsolete) A lively, showy man; a rake.
- Alternative letter-case form of Blood (member of a certain gang).
- A vital liquid flowing in the bodies of many types of animals that usually conveys nutrients and oxygen. In vertebrates, it is colored red by hemoglobin, is conveyed by arteries and veins, is pumped by the heart and is usually generated in bone marrow.
- VerbSGbloodsPRbloodingPT, PPblooded
- More Examples
- Used in the Middle of Sentence
- The surgeon lased the elongated soft palate, cutting off the excess tissue and stopping the blood flow in one swipe.
- After his heroic confrontation with cold blood in Kansas, Capote retreated to a tree house in Manhattan, there to play literary games for ever smaller and overpublicized stakes.
- The blood was collected in nonheparinized tubes and centrifuged (3100 g, 25 °C, 15 min).
- Used in the Beginning of Sentence
- Blood is one of the easiest things to arrange on a filmset.
- Blood or lymph vessels in humans, xylem or phloem vessels in plants.
- Blood work showed neutropoenia with absolute neutrophil count of 0.64×10 9 cells/L.
- Used in the Ending of Sentence
- Working in an Operating Room desensitized me to the sight of blood.
- Diana Kennedy, in her recipe for the Mexican sausage moronga, calls for two quarts of pig’s blood.
- The animals were perfused with 4% paraformaldehyde (PFA; JT Baker, JTS898-7), after a saline preflush of 50mL that was used to remove the blood.
- Used in the Middle of Sentence
Definition of blood in English Dictionary
- Part-of-Speech Hierarchy
- Nouns
- Countable nouns
- Singularia tantum
- Uncountable nouns
- Uncountable nouns
- Countable nouns
- Verbs
- Nouns
- en bloody
- en bloodthirsty
- en bloodshot
- en bloodhound
- en bloodroot
Source: Wiktionary
Grammatically, this word "blood" is a noun, more specifically, a countable noun and a singularia tantum. It's also a verb.