• (n.) A name given in California to various composite plants which secrete resins or have a resinous smell. • (n.) The compass plant. See under Compass. Found on http://thinkexist.com/dictionary/meaning/rosinweed/
Ros'in·weed` noun (Botany) (a) The compass plant. See under Compass . (b) A name given in California to various composite plants which secrete resins or have a resinous smell. Found on http://www.encyclo.co.uk/webster/R/94