code: def delete_word(word):
      '''delete the word or phrase from database.'''
  
      conn = sqlite3.connect(os.path.join(DEFAULT_PATH, 'word.db'))
      curs = conn.cursor()
      # search fisrt
      curs.execute('SELECT expl, pr FROM Word WHERE name = "%s"' % word)
      res = curs.fetchall()
  
      if res:
          try:
              curs.execute('DELETE FROM Word WHERE name = "%s"' % word)
          except Exception as e:
              print(e)
          else:
              print(colored('%s has been deleted from database' % word, 'green'))
              conn.commit()
          finally:
              curs.close()
              conn.close()
      else:
          print(colored('%s not exists in the database' % word, 'white', 'on_red')f delete_word(word):
      '''delete the word or phrase from database.'''
  
      conn = sqlite3.connect(os.path.join(DEFAULT_PATH, 'word.db'))
      curs = conn.cursor()
      # search fisrt
      curs.execute('SELECT expl, pr FROM Word WHERE name = "%s"' % word)
      res = curs.fetchall()
  
      if res:
          try:
              curs.execute('DELETE FROM Word WHERE name = "%s"' % word)
          except Exception as e:
              print(e)
          else:
              print(colored('%s has been deleted from database' % word, 'green'))
              conn.commit()
          finally:
              curs.close()
              conn.close()
      else:
          print(colored('%s not exists in the database' % word, 'white', 'on_red'))
docs: delete the word or phrase from database.