Definition of romerillo
plural -s
1
:any of several tropical American plants with an aromatic odor most of which yield native remedies or dyes: such as
a
:a South American herb (Heterothalamus brunioides) of the family Compositae whose flower heads yield a yellow dye
b
:a Mexican shrubby milkweed (Asclepias linaria) that yields a violent purge
c
:any of several Mexican plants of the family Compositae (especially Porophyllum scoparium and Chrysactinia mexicana)
2
:the dye yielded by the South American herb romerillo
