Learner's definition of BLOOD
the red liquid that flows through the bodies of people and animals
see also bad blood, cold-blooded, full-blooded, hot-blooded, red-blooded, warm-blooded
The accident victim has already lost a lot of blood.
the blood in your veins
She donates/gives blood twice a year. [=twice a year she has blood taken out of her body so that it can be put into the body of a person who needs it]
members of a team, company, or organization
— usually used in the phrases new blood or young blood
blood and guts
blood is thicker than water
◊ The saying blood is thicker than water means that a person's family is more important than a person's other relationships or needs.
blood is up
◊ In British English, when you say that someone's blood is up, you mean that someone is angry and wants to fight or argue.
blood on your hands
◊ If someone's blood is on your hands, you are responsible for that person's death.
by a relationship that connects two people through their natural parents, grandparents, etc.
to take blood from a person's body for medical reasons
to cause blood to flow from a person's body
— sometimes used figuratively
in cold blood
in a deliberate way
following a plan
in your blood
◊ If something (such as an ability or activity) is in your blood, it is part of your nature and is often shared by your family members.
make someone's blood boil
to make someone very angry
make someone's blood curdle
make someone's blood run cold
to cause someone to be very afraid or disgusted
out for blood
◊ If you are out for blood or out for someone's blood, you are very angry and you want to kill someone or to cause someone pain or discomfort.
to kill people violently
to care a lot about something and work very hard for it
to experience pleasure as a result of defeating an opponent