323 - Caustic

1. ​​(of a chemical substance) able to destroy or dissolve      (= remove or destroy by a chemical process) other substances                                                                  (Oxford)  

2. critical in a bitter or sarcastic way                                 (Oxford)

3. A caustic chemical burns or destroys things, especially anything made of living cells                              (Cambridge) 

                                                           جلانے والا