# Medicine Line

> English word · Proper noun

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

## Etymology
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”).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/medicine-line