Definition of batch noun from the Oxford Advanced Learner's Dictionary

batch

noun
bætʃ
 
; bætʃ
 
 
1 a number of people or things that are dealt with as a groupEach summer a new batch of students tries to find work.He worked his way through the batch of letters on his desk.We deliver the goods in batches.2 an amount of food, medicine, etc. produced at one timea batch of cookiesloaves of bread baked in batches of 20It is necessary to make new batches of flu vaccine whenever a different, virulent strain of flu makes an appearance.3 (computing) a set of jobs that are processed together on a computerto process a batch joba batch file/program