RISS definitions

Riss

1) European glacial stage 2) Geological stage 3) Glacial stage 4) Niminy-piminy person 5) Of a glacial period
Found on https://www.crosswordclues.com/clue/riss

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Riss

The Riss gave its name to the Riss glaciation, an ice age. ...
Found on http://en.wikipedia.org/wiki/Riss

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RISS

Register of Independent Schools.
Found on http://www.encyclo.co.uk/local/20791

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