Brucite,bru' -site

Nuttall's Standard Dictionary of the English Language · 1890 · p. 25

s. hydrate of magnesia; a compound silicate and fluoride of magnesia (Bruce) squeezing; to injure by ablow, fall, or squeeze; to contuse: s. a hurt with a blunt or heavy instrument; a contusion (Fr. briser, to break). for grinding the specula of telescopes; a boxer.