Dexterity is a term referring primarily to the ability of a person to "gracefully" coordinate their movements. It specifically refers to adroitness in using the hands. In this context, dexterity is a motor skill. The term can also refer to intelligence and "mental dexterity". Dexterity, in the former sense, is a primary attribute of Dungeons & Dragons characters.
See also Special Purpose Dexterous Manipulator.