DCHP-1 Online
good medicine 
in Indian parlance, any auspicious action, event, or thing; good luck.
See also: bad medicine (def. 1)
- 1858 (1935) I gave a bundle [of matches] to Mis-tick-oos, who wrapped them carefully in a piece of deerskin, and said he should keep them safely: they were "good medicine."
- 1893 When specially fortunate in hunting or warfare or in more quiet duties of life he was said to be under the influence of "good medicine."
- 1923 He could not have gone to heaven had he died with his eyes open; and for themselves it would not have been "good medicine" to leave him.
- 1965 . . . if an Indian's horse romped home in a race, the winner cared little whether the shaman had come to his aid with good medicine or the sorcerer had assisted him by putting a curse on the losers.
- 1858 (1935) I gave a bundle [of matches] to Mis-tick-oos, who wrapped them carefully in a piece of deerskin, and said he should keep them safely: they were "good medicine."