› a group of things that are dealt with or produced at the same time, or a group of people who are similar in some way: Stores have been asked to trace any potentially contaminated batches. The latest batch of reports suggests the economy is slowing down. 54,000 letters will be sent out, in batches of 3,000 a day. Batch orders are more cost-effective than purchasing in smaller quantities. There will be a five-day training course for our latest batch of recruits.