SCOR'PION-GRASS, SCOR'PION'S TAIL, noun A plant of the genus Scorpiurus, with trailing herbaceous stalks, and producing a pod resembling a caterpillar, whence it is called caterpillars. The mouse-ear scorpion-grass is of the genus Myosotis.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI