spiral
nounA curve on a plane that winds around a fixed center point at a continuously increasing or decreasing distance from the point.
nounA three-dimensional curve that turns around an axis at a constant or continuously varying distance while moving parallel to the axis; a helix.
nounSomething having the form of such a curve.
nounA spiral binding.
nounThe course or flight path of an object rotating on its longitudinal axis.
nounA continuously accelerating increase or decrease.
adjectiveOf or resembling a spiral.
adjectiveCircling around a center at a continuously increasing or decreasing distance.
adjectiveCoiling around an axis in a constantly changing series of planes; helical.