(SER)Ђерам, Ђерма, Гемешкут, Чигашкут, Стреласти бунар, Компон бунар
Is an basic irrigation tool used in Eastern Europe.
It was originally developed in ancient Mesopotamia and it is considered one of the oldest human made machines that are still in common use today.
Around the world it is also known as a shadoof, shaduf (from an Arabic word, شادوف, šādūf), dhenkli, picottah and also anciently known by the Greek name κήλων or κηλώνειον, kēlōn or kēlōneion
In English it is called counterpoise-lift well or with a less common English translation: Swape.