[mole] n [ME, fr. OE mal; akin to OHG meil spot] (14c): a pigmented spot, mark, or small permanent protuberance on the human body; esp: nevus
[2]mole n [ME; akin to MLG mol] (14c) 1: any of numerous burrowing insectivores (esp. 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 [3]mole n [ME, fr. L mola mole, lit., mill, millstone--more at mill] (15c): an abnormal mass in the uterus esp. when containing fetal tissues [4]mole n [MF, fr. OIt molo, fr. LGk molos, fr. L moles, lit., mass, exertion; akin to Gk molos exertion] (ca. 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 [5]mole also mol n [G Mol, short for Molekulargewicht molecular weight, fr. molekular molecular + Gewicht weight] (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 [6]mo.le n [MexSp, fr. Nahuatl molli sauce] (1927): a spicy sauce made with chilies and usu. chocolate and served with meat