Merriam-Webster Collegiate Dictionary - taw

 I. transitive verb  Etymology: Middle English, to prepare (soil), ~, from Old English ~ian to prepare, make; akin to Old High German zawjan to hasten, Gothic taujan to do, make  Date: before 12th century to tan (skins) usually by a dry process (as with alum or salt)  II. noun  Etymology: Hebrew taw, literally, mark, cross  Date: 1701 the 23d letter of the Hebrew alphabet — see alphabet table  III. noun  Etymology: origin unknown  Date: 1709  1.  a. a marble used as a shooter  b. ring~  2. the line from which players shoot at marbles  3. a square-dance partner  IV. intransitive verb  Date: 1863 to shoot a marble