Tammerkoski

Etymology
Borrowed from an early substrate, from, from  (compare 🇨🇬) +  (cognate with 🇨🇬; the Finnish name could thus be a  from Sami). The reason for the -r- instead of -l- may be dissimilation of the external locative forms ( > ) or perhaps more likely due to the variation of ~  suffixes in words referring to places. In the past also proposed to derive from. which is now considered less likely, as the name is likely older than Swedish influence in Finland.

Proper noun

 * 1) a rapids in Finland that runs through the modern city of Tampere