It means curves, turns, helices, curls, snails, cachumbos, loop, loop. It is the plural of spiral. It is a closed curve line which will progressively your radio into a point.
spirals is incorrectly written and should be written as being its meaning spiral: spirals: is the plural of spiral that also comes from the Greek PI-3. 1416 out the perimeter of a circle is measured diameter ES-PI - RAL in geometry is a planar curve, which as it is generating around Central the magnificent from a Center, is moving away from it. In nature we have many examples one of the most well-known is the snail.
Plural of spiral.