  The 3 main cell types in human blood are erythrocytes (red blood cells), leukocytes (white blood cells), and thrombocytes (platelets).here are several different types and sub-types of white blood  cells. The three main types are granulocytes, monocytes, and  lymphocytes, and each of these types have sever â¦ al sub-types under  them.
whiner definition: Noun (plural whiners) 1. One who whines about perceived problems; a complainerI never realized that Felicia was such a whiner, but she complained steadily about various minor discomforts for the entire road trip.... Definitions
Definition of tumbler. 1  1 : one that tumbles: such asa : one who performs tumbling feats : acrobatb : any of various domestic pigeons that tumble or roll over backward in flight or on the ground. 2  2 : a drinking glass without foot or stem and originally with pointed or convex base.