Is it ensure, insure, or assure?
any plant of the genera Lycopsis and Echium of the family Boraginaceae; they are weedy, bristly annuals with small, bright-blue flowers that have hairy white throats. The blooms resemble small clusters of half-closed forget-me-nots with a bend at the middle of the floral tube. The 40-centimetre- (about 16-inch-) high plants have toothed, spiny leaf margins. They grow in sandy places and fields throughout Europe and have become naturalized in eastern North America.