The word "munchkin" is often used to refer to a small child or a person who is small in stature. It can also evoke a sense of cuteness or endearment, suggesting that the person is playful or innocent. The term became widely popularized in pop culture, particularly from the character in "The Wizard of Oz," who are small people living in the Land of Oz.
The term "munchkin" is believed to have originated in the 1939 film "The Wizard of Oz," based on L. Frank Baum's book. The word may be a diminutive form of "munch," which means to chew or eat something with a crunching sound, or it could be derived from the word "munchkin" used in English dialects to refer to small, often cheeky children.