ballasting
101trim — [trim] vt. trimmed, trimming [via ME dial. < OE trymman, to make firm, set in order, array < trum, strong, firm: for IE base see TREE] 1. Obs. to prepare; fit out; dress 2. to put in proper order; make neat or tidy, esp. by clipping,… …
102track jack — noun : a device for raising railway track during ballasting or other track operations …
