DCHP-1 Online
cat-swing North 
n. a tractor-drawn train of sleds and cabooses (def. 5), the principal means of transporting freight, supplies, etc. in the Canadian North in winter.
See also: caboose (def. 5) cat-train swing (def. 2)
- 1948 These "cat swings," travelling across frozen lakes in the winter months, carry more than 2,000,000 pounds of fish annually and transport supplies for development projects. . . .
- 1958 An important aid in the development of Manitoba's northland has been the "cat swing"--12 to 15 sleighs pulled by a team of tractors.
- 1962 The stretch from God's Lake to Ilford is a regular tractor train route used by many cat swings which then branch out to all the mines and trading posts in that part of the north.
- 1948 These "cat swings," travelling across frozen lakes in the winter months, carry more than 2,000,000 pounds of fish annually and transport supplies for development projects. . . .