Pickle is Food preserved in Salt solution or vinegar. Frequently pickles are vegetables. Different cultures have different traditions over which foods they traditionally pickle but Cucumber, Gherkin and Onion are frequently pickled. Like many foods pickles are healthy in moderation but it's best to check the salt content before buying pickles. 
Can you imagine what it’s like to be dying in some dirty place with cockroaches biting you while you are still alive? I can’t -- though Scientologists let Lisa McPherson die that way. If you’ve the stomach for them here’s the Autopsy photos.