TOOTH'WORT, noun A plant whose roots resemble human teeth, such as the Lathroea squamaria, various species of Dentaria, the Ophrys corallorrhiza, etc. This name is also given to the lead-wort, of the genus Plumbago, form its toothed corol.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI