Quick definitions from WordNet (track)

▸ noun:  the act of participating in an athletic competition involving running on a track
▸ noun:  any road or path affording passage especially a rough one
▸ noun:  a bar or bars of rolled steel making a track along which vehicles can roll
▸ noun:  a pair of parallel rails providing a runway for wheels
▸ noun:  a groove on a phonograph recording
▸ noun:  (computer science) one of the circular magnetic paths on a magnetic disk that serve as a guide for writing and reading data
▸ noun:  an endless metal belt on which tracked vehicles move over the ground
▸ noun:  evidence pointing to a possible solution
▸ noun:  a distinct selection of music from a recording or a compact disc ("The title track of the album")
▸ noun:  a line or route along which something travels or moves ("The track of an animal")
▸ noun:  a course over which races are run
▸ verb:  carry on the feet and deposit ("Track mud into the house")
▸ verb:  observe or plot the moving path of something ("Track a missile")
▸ verb:  make tracks upon
▸ verb:  travel across or pass over
▸ verb:  go after with the intent to catch

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▸ Also see track