LEUKOCYTES

n. white blood cell

White blood cells or leukocytes are cells of the immune system which defend the body against both infectious disease and foreign materials. Several different and diverse types of leukocytes exist, but they are all produced and derived from a multipotent cell in the bone marrow known as a hematopoietic stem cell. Leukocytes are found throughout the body, including the blood and lymphatic system.
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Leukocytes, n.pl white blood cells. They protect the body from disease-causing viruses, bacteria, toxins, parasites, and tumor cells. [more]Leukocytes - Community and Resources

Noun
1. blood cells that engulf and digest bacteria and fungi; an important part of the body's defense system
(synonym) leucocyte, white blood cell, white cell, white blood corpuscle, white corpuscle, WBC
(hypernym) blood cell, blood corpuscle, corpuscle
(hyponym) myelocyte

Cells that help the body fight infections and other diseases. Also called white blood cells (WBCs).