The monkeys are often divided into three groups: (a) catarrhines, or Simidae. These have an oblong head, with the oblique flat nostrils near together. Some have no tail, as the apes. All these are natives of the old world. (b) platyrhines, or cebidae. These have a round head, with a broad nasal septum, so that the nostrils are wide apart and directed downward. The tail is often prehensile, and the thumb is short and not opposable. These are natives of the new world. (c) strepsorhines, or lemuroidea. These have a pointed head with curved nostrils. They are natives of southern asia, Africa, and madagascar.
3. The weight or hammer of a pile driver, that is, a very heavy mass of iron, which, being raised on high, falls on the head of t 927 he pile, and drives it into the earth; the falling weight of a drop hammer used in forging.
(Science: botany) monkey flower, a second and lighter rail raised about six inches above the quarter rail of a ship. Monkey shine, monkey trick. Monkey trick, a mischievous prank. Monkey wheel. See gin block, under 5th gin. Monkey wrench, a wrench or spanner having a movable jaw.