DCHP-1 Online

main line

• 1 North, Hist. See 1941 quote.

  See also: tracking line  

• 2 See 1953 quote at line (def. 7).

  See also: line ((n.)) (def. 7)  

• 3 Lumbering See 1942 quote. [See picture at high-lead system.] Also spelled mainline.

  See also: main