Source : Webster's Revised Unabridged Dictionary (1913)

Tracklayer \Track"lay`er\, n. (Railroads)
   Any workman engaged in work involved in putting the track in
   place. [U. S. & Canada] -- {Track"lay`ing}, n.

Source : WordNet®

tracklayer
     n : a workman who lays and repairs railroad tracks [syn: {platelayer}]