n.
Function: noun
Etymology: Middle English tracte, from Latin tractus action of drawing, extension, from trahere to pull, draw
Date: 15th century
1 : extent or lapse of time
2 : an area either large or small: as a : an indefinite stretch of land b : a defined area of land
3 a : a system of body parts or organs that act together to perform some function <the digestive tract > b : a bundle of nerve fibers having a common origin, termination, and function