Merriam-Webster Collegiate Dictionary - plow

 I. noun  Etymology: Middle English, from Old English ploh hide of land; akin to Old High German pfluog ~  Date: 12th century  1. an implement used to cut, lift, and turn over soil especially in preparing a seedbed  2. any of various devices (as a snow~) operating like a ~  II. verb  Date: 15th century  transitive verb  1.  a. to turn, break up, or work with a ~  b. to make (as a furrow) with a ~  2. to cut into, open, or make furrows or ridges in with or as if with a ~  3. to cleave the surface of or move through (water) whales ~ing the ocean  4. to clear away snow from with a snow~ ~ the street  5. to spend or invest (money) in substantial amounts — used with into ~s most of her income into mutual funds  intransitive verb  1.  a. to use a ~  b. to bear or admit of ~ing  2.  a. to move in a way resembling that of a ~ the car ~ed into a fence  b. to proceed steadily and laboriously had to ~ through a stack of letters  • ~able adjective  • ~er noun