‖n. [ G. ] A spiritual or ghostly double or counterpart; esp., an apparitional double of a living person; a cowalker. [ Webster 1913 Suppl. ]
n. [ D. dooper. ] [ Written also doper. ] An Anabaptist or Baptist. [ Contemptuous ] B. Jonson. [ 1913 Webster ]
n. [ Named after the physicist and mathematician Christian Doppler. ] (Min.) A brownish black native hydrocarbon occurring in elastic or jellylike masses. [ 1913 Webster ]