Gumbo vegetable is a term used to describe the vegetable OKRA, which is a four-letter word. OKRA is a flowering plant native to Africa and is widely cultivated in tropical, subtropical, and warm temperate regions around the world. It is an important part of many cuisines, particularly in the Southern United States, where it is a key ingredient in gumbo. OKRA is also known for its mucilaginous texture when cooked, which makes it a popular thickening agent for soups and stews.