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"
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.
"After the fight broke out in the alley, two members of the rival set realized they were dealing with a loyal Blood who refused to back down."
A member of the Los Angeles gang The Bloods.
In plain English: Blood is the red liquid that flows through your body to carry oxygen and nutrients to every part of you.
"The accident caused a lot of blood to spill on the road."
Usage: Blood refers to the red liquid that circulates through your body and carries oxygen to your cells. Do not confuse this biological term with slang for a gang member, which is a specific subcultural usage unrelated to the word's primary meaning.
smear with blood, as in a hunting initiation rite, where the face of a person is smeared with the blood of the kill
"During the traditional hunt, the elder took a knife and smears his initiate's cheek with the fresh blood from the deer to mark him as part of the pack."
To cause something to be covered with blood; to bloody.
"The sudden clash between the two fighters left both of them bloodied from head to toe."
In plain English: To blood something means to sharpen it by cutting it against a stone or another hard surface.
"The pressure in his head began to bleed when he stood up too quickly."
Usage: Use "blood" as a verb only when describing the act of causing something to become covered in blood, such as saying a weapon was bloodied during a fight. This usage is rare and often sounds more natural if you instead use the adjective "bloody" or say that something "was stained with blood."
The word blood comes from Old English blōd and may ultimately derive from a Proto-Indo-European root meaning "to swell." This suggests an original sense of "that which bursts out," describing the fluid that flows freely from the body.