I. mole ˈmōl noun
Etymology: Middle English, from Old English māl; akin to Old High German meil spot
Date: 14th century
: a pigmented spot, mark, or small permanent protuberance on the human body ; especially : nevus
II. mole noun
Etymology: Middle English; akin to Middle Low German mol
Date: 14th century
1. : any of numerous burrowing insectivores (especially family Talpidae) with tiny eyes, concealed ears, and soft fur
2. : one who works in the dark
3. : a machine for tunneling
4. : a spy (as a double agent) who establishes a cover long before beginning espionage ; broadly : one within an organization who passes on information
III. mole noun
Etymology: Middle English, from Latin mola mole, literally, mill, millstone — more at mill
Date: 15th century
: an abnormal mass in the uterus especially when containing fetal tissues
IV. mole noun
Etymology: Middle French, from Old Italian molo, from Late Greek mōlos, from Latin moles, literally, mass, exertion; akin to Greek mōlos exertion
Date: circa 1548
1. : a massive work formed of masonry and large stones or earth laid in the sea as a pier or breakwater
2. : the harbor formed by a mole
V. mole noun
also mol ˈmōl
Etymology: German Mol, short for Molekulargewicht molecular weight, from molekular molecular + Gewicht weight
Date: 1902
: the base unit of amount of pure substance in the International System of Units that contains the same number of elementary entities as there are atoms in exactly 12 grams of the isotope carbon 12
VI. mo·le ˈmō-lā noun
Etymology: Mexican Spanish, from Nahuatl mōlli sauce
Date: 1901
: a spicy sauce made with chilies and usually chocolate and served with meat