[Edward Manning Ruttenber (1906)] It is from _Sikkâkâskeg,_ meaning "Salt sedge marsh." (Gerard.) The Dutch found snakes on Snake Hill and called it Slangberg, literally, "Snake Hill." Passaic is a modern orthography of _Pasaeck_ (Unami-Lenape), German notation, signifying "Vale or valley." Zeisberger wrote _Pachsójeck_ in the Minsi dialect. The valley gave name to the stream. In Rockland County it has been corrupted to Paskack, Pasqueck, etc. Paquapick is entered on Pownal's map as the name of Passaic Falls. It is from _Poqui,_ "Divided, broken," and _-ápuchk,_ "Rock." Jasper Dankers and Peter Sluyter, who visited the falls in 1679-80, wrote in their Journal that the falls were "formed by a rock stretching obliquely across the river, the top dry, with a chasm in the center about ten feet wide into which the water rushed and fell about eighty feet." It is this rock and chasm to which the name refers--"Divided rock," or an open place in a rock.