D defs.my
Entry 1 sense Webster, 1913

James's powder

/jām'-zĭz poud'-ẽr/ · James·'s pow·der · IPA
01 Antimonial powder, first prepared by Dr. James, an English physician; -- called also fever powder.
  1. 1.
    Antimonial powder, first prepared by Dr. James, an English physician; -- called also fever powder.(Med.) Also: fever powder