Tract - Definition
tract
n 1: an extended area of land [syn: tract, piece of land,
piece of ground, parcel of land, parcel]
2: a system of body parts that together serve some particular
purpose
3: a brief treatise on a subject of interest; published in the
form of a booklet [syn: tract, pamphlet]
4: a bundle of myelinated nerve fibers following a path through
the brain [syn: nerve pathway, tract, nerve tract,
pathway]