tomatillo: annual of Mexico and southern United States having edible purplish viscid fruit resembling small tomatoes
ground cherry: any of numerous cosmopolitan annual or perennial herbs of the genus Physalis bearing edible fleshy berries enclosed in a bladderlike husk; some cultivated for their flowers
uranium 238: the commonest isotope of uranium; it is not fissionable but when irradiated with neutrons it produces fissionable plutonium 239