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stavesacre (n.)

herbal plant of the Delphinium family, c. 1400, from Latin staphisagria, from Greek staphis agria, literally "wild raisin," from staphis "raisin" (according to Klein, probably related to staphyle "bunch of grapes") + agria, fem. of agrios "wild," literally "living in the fields," from agros "field" (from PIE root *agro- "field").