D defs.my
Entry 2 senses Webster, 1913

Earthwork

/ẽrth'-wẽrkˌ/ · Earth·work · IPA /ˈɝθwɝk/
01 n. Any construction, whether a temporary breastwork or permanent fortification, for attack or defense, the material of which is chiefly earth.
  1. 1.
    Any construction, whether a temporary breastwork or permanent fortification, for attack or defense, the material of which is chiefly earth.(Mil.)
  2. 2.
    The operation connected with excavations and embankments of earth in preparing foundations of buildings, in constructing canals, railroads, etc.(Engin.)