"sexual pleasure in being hurt or abused," 1892, from German Masochismus, coined 1883 by German neurologist Richard von Krafft-Ebing (1840-1902), from name of Leopold von Sacher-Masoch (1836-1895), Austrian utopian socialist novelist who enshrined his submissive sexuality in "Venus in Furs" (1869, German title "Venus im Pelz").
Sacher-Masoch's parents merged their name when they married; von Masoch is his mother's surname. She was said to be from the Ukrainian aristocracy, and Masoch may represent a Germanized form of a Slavic name, probably a place-name.
Meaning "requiring or exhibiting courage" is from mid-13c. Also in a bad sense, "audacious, presumptuous, overstepping usual bounds" (c. 1200). From 1670s as "standing out to view, striking the eye." Of flavors (coffee, etc.) from 1829. The noun meaning "those who are bold" is from c. 1300 in both admiring and disparaging senses. Old French and Provençal baut "bold," Italian baldo "bold, daring, fearless" are Germanic loan-words. Related: Boldly; boldness.