https://en.wikipedia.org/wiki/Vegetable

> Vegetables are edible parts of plants that are consumed by humans or other animals as food. This original meaning is still commonly used, and is applied to plants collectively to refer to all edible plant matter, including flowers, fruits, stems, leaves, roots, and seeds. An alternative definition is applied somewhat arbitrarily, often by culinary and cultural tradition; it may include savoury fruits such as tomatoes and courgettes, flowers such as broccoli, and seeds such as pulses, but exclude foods derived from some plants that are fruits, flowers, nuts, and cereal grains.

> Vegetables are edible parts of plants that are consumed by humans or other animals as food. This original meaning is still commonly used

Well, the Wikipedia author who wrote this is clearly mistaken here. Sweet fruits like grapes are rarely called vegetables, so this definition uncommon, not common.

Not everything on Wikipedia is true.

In idiomatic British English vegetable excludes fruit except for those fruits that are treated as vegetables such as tomatoes, etc.

The definition is arbitrary, hard and tedious to specify but nonetheless most people I know agree on which side of the line most common edible plant parts are on.

So the meat of a banana would be a vegetable but not its skin? Never heard this definition.

That is some "every element apart from helium and hydrogen is a metal" taxonomy!