BATM is Bitcoin Automated Teller Machine. Just like an ATM or Automated Teller Machine, you can use BATM to deposit or withdraw your Bitcoins. Depositing Bitcoins means you are buying BTC and withdrawing means you are selling BTC. YOu can receive fiat currency for your BTC. These machines also support a number of altcoins. Is there any BATM in your country? Have you used it?