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spi·ral

spiral

 
 
pronunciation:
spaI rl
part of speech: noun
definition: A spiral is a curve that begins at one point and continues to go around and around. Sometimes the curve of a spiral goes around and around itself, getting bigger each time it goes around, but sometimes it goes down and down as it curves around many times.
The staircase in the grand old building has a staircase in the shape of a spiral.
 
derivation: spirally (adv.)