White blood cells (WBCs), also called leukocytes or leucocytes, are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.All leukocytes are produced and derived from a multipotent cell in the bone marrow known as a hematopoietic stem cell.onocytes and neutrophils are phagocytic. The number of leukocytes in the blood is often an indicator of disease, and thus the WBC count is an important subset of the complete blood count. The normal white cell count is usually between 4 and 11 Ã 10 9 /L.
adjective. The definition of perky is someone who is cheerful, peppy and self-confident. A smiling, happy cheerleader with lots of energy is an example of someone who might be described as perky.
(US, NZ) a white person. Derived from an African American pronunciation of  hunky , the disparaging term for a Hungarian laborer. The first record of its use as an insulting term for a white person dates from the 1950s. In New Zealand honky is used by MÄori to describe New Zealanders of European descent.racker. (US) a poor Appalachian or poor Southerner, a white person, first used in the 19th century. It is sometimes used specifically to refer to a native of Florida or Georgia, sometimes positively or self-descriptively.