1. (

• tract ,
• piece_of_land ,
• piece_of_ground ,
• parcel_of_land ,
• parcel

) an extended area of land ;

2. (

• tract ,

) 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 ;