noun - the level of quality, ability, or intelligence of a person or thing
noun, technical - impairment of the ability to write, as a result of brain dysfunction
noun, formal - the power to choose something freely or to make your own decisions
noun - a small, thin stick used for removing food from between the teeth
noun - a cell in the nervous system that sends and receives electrical signals
noun - the act of moving smoothly from one subject or song to another
noun - the most important or difficult part of a problem, issue, or argument