
1) Book of Kells decorations 2) Certain football passes 3) Certain punts 4) Circles down 5) Corkscrew shapes 6) Curlicues, essentially 7) Fusilli forms 8) Helical shapes 9) Helixes 10) Increases steadily 11) Inflationary paths 12) Inflationary trends 13) Nautilus shapes 14) Nicely thrown passes 15) Passes by montana, usually
Found on
https://www.crosswordclues.com/clue/spirals

1) Coils 2) Helices 3) Helixes
Found on
https://www.crosswordclues.com/clue/spirals

Sandy minerals such as mineral sands can be concentrated by slurrying and passing down a spiral channel to separate the heavy component.
Found on
http://www.metalbulletin.com/Glossary.html

the parts of a spider's web that widens or gradually goes out from the center of the web; the spokes of the web go across the spirals
Found on
https://www.encyclo.co.uk/local/22348
No exact match found.