canaigre

Meanings

1. Rumex hymenosepalus, a species of dock native to southwestern North America with edible red stems and taproots containing tannin.
2. Tannin-containing matter obtained from the taproots of the plant.

Etymology

Possibly from Mexican Spanish canaigre, cañagre, cañaigre, variants of cañagria, from caña agria (“canaigre”, literally “sour cane”), from caña (“cane; reed”) (ultimately from Sumerian 𒄀𒈾 (gi.na)) + agria (feminine singular of agrio (“sour”), ultimately from Proto-Indo-European *h₂eḱ- (“sharp”)).