Ru'pert's-drōp, n.
n. A kind of glass drop with a long tail, remarkable for bursting into fragments when the surface is scratched, or the tail broken;—so called from Prince Rupert, by whom they were first brought to England.
n. A kind of glass drop with a long tail, remarkable for bursting into fragments when the surface is scratched, or the tail broken;—so called from Prince Rupert, by whom they were first brought to England.