Webster's English Dictionary

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batch

1. batch \'bach\ n [ME bache; akin to OE bacan to bake] 1: the quantity 
   baked at one time : BAKING  2a: the quantity of material prepared or 
   required for one operation; spe cif : a mixture of raw materials ready for 
   fusion into glass 2b: the quantity produced at one operation  3: a group of 
   persons or things : LOT 
2. batch  var of BACH