what is a small bump on the skin
The real answer is wart
The small bump-like growths of skin that cover the turkey's neck are called caruncles. The wattle hangs from the front of the turkey's throat and the snood hangs from its forehead.
A bump is a lump like, for example, a bump on your skin or a bump in a road.
Horsefly bites are red and form a small bump on the skin. The bump turns hard and may develop a pustule on top.