bottom quark: a quark with a charge of -1/3 and a mass about 10,000 times that of an electron
quark: (physics) hypothetical truly fundamental particle in mesons and baryons; there are supposed to be six flavors of quarks (and their antiquarks), which come in pairs; each has an electric charge of +2/3 or -1/3
spurred gentian: any of various plants of the genus Halenia having flowers with spurred lobes