A beel (Bengali and Assamese: বিল) is a billabong or a lake-like wetland with static water as opposed to moving water in rivers and canals - typically called khāls in Bengali, in the Ganges - Brahmaputra flood plains of Bangladesh, and the Indian states of West Bengal and Assam. The term owes its origins to the word of the same pronunciation meaning "pond" and "lake" in the Bengali and Assamese languages.