Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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blood bank a place where blood is collected and stored for later use by people who have lost too much blood.
blood vessel any of the tubes in the body through which the blood moves. Arteries, veins, and capillaries are types of blood vessel.
in cold blood with a definite intention to harm.
make one's blood boil to make angry.
make one's blood run cold to make one terrified.
red blood cell a cell in the blood that carries oxygen to the body's tissues.
white blood cell a small blood cell with no color that helps protect the body against infections and bacteria.