MOLE
1 none. 1 small burrowing mammal with dark velvety fur and very small eyes. 2 slang spy established in a position of trust in an organization. [low german or dutch]
1 none. 1 small burrowing mammal with dark velvety fur and very small eyes. 2 slang spy established in a position of trust in an organization. [low german or dutch]
2 none. Small permanent dark spot on the skin. [old english]
3 none. 1 massive structure serving as a pier, breakwater, or causeway. 2 artificial harbour. [latin moles mass]
4 none. Chem. The si unit of amount of a substance equal to the quantity containing as many elementary units as there are atoms in 0.012 kg of carbon-12. [german mol from molekül *molecule]