Medicine Line

proper noun

The Canada-United States border; the 49th parallel north: a circle of latitude that is 49° north of Earth's equator.

Meanings

proper nounthe Medicine Line
  1. CanadaUSinformalThe Canada-United States border; the 49th parallel north: a circle of latitude that is 49° north of Earth's equator.

Origin

First known attestation from 1880 where the term was described as being used "because no matter what [the Indians] have done [committed crimes] upon one side they feel perfectly secure after having arrived upon the other". A synonymous term which was attested earlier is medicine road from 1869 and ostensibly a calque of a Sioux term transcribed as "pejuta canku". Unrecorded use of the term or a similar one may date back more than a century earlier than the first attestation. See also medicine (“protective charm among the Native Americans”).

Full word history & related roots →
Cite this entry
APA

Medicine Line. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/Medicine%20Line

MLA

“Medicine Line.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Medicine%20Line. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “Medicine Line,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/Medicine%20Line.

Source: Medicine Line on Wiktionary, CC BY-SA 4.0.