Basophil means: Basophil is a type of white blood cells leukocyte that has coarse, bluish black granules with uniform sizes within the cytoplasm. Basophils get their name because the cytoplasmic pigments of basophils can stain with basic dyes. Basophils make up 0.5-3 percent of peripheral blood cells. They also contain serotonin and histamine. Basophilic leukocyte is also known.
(in Medical Dictionary)

What else does Basophil mean?

A cell with granules which stain easily with basic dyes, particularly a white blood cells.
(in Merlin Dictionary)