definition of
track

[1] #1 track n. [path, course] a line or route along which something travels or moves; "the hurricane demolished houses in its path"; "the track of an animal"; "the course of the river". wn

[2] #2 track v. carry on the feet and deposit; "track mud into the house". wn

[3] #3 track v. observe or plot the moving path of something; "track a missile". wn

[4] #4 track n. [lead, trail] evidence pointing to a possible solution; "the police are following a promising lead"; "the trail led straight to the perpetrator". wn

[5] #5 track n. a pair of parallel rails providing a runway for wheels. wn