(Jimmy of the Clue Crew shows a plant diagram on the monitor.)  Similar to a root, it's the botanical term for a thick, horizontal underground stem from which shoots develop into new plants
[DOC] [TLE] jeopardy/2191_Qs.txt at master  jedoublen/jeopardy  GitHub [PAR] Scores at the first commercial break (after clue 15) .... "R" WORLD | (<http://www.j-
archive.com/media/2007-11-19_DJ_05.jpg> Jimmy of the Clue Crew shows a 
plant diagram on the monitor.)