"tracts" in the noun sense
1. tract, piece of land, piece of ground, parcel of land, parcel
an extended area of land
a system of body parts that together serve some particular purpose
3. tract, pamphlet
a brief treatise on a subject of interest published in the form of a booklet
4. nerve pathway, tract, nerve tract, pathway
a bundle of myelinated nerve fibers following a path through the brain
Source: WordNet® (An amazing lexical database of English)
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