spiral
英 ['spa?r(?)l]
美['spa?r?l]
- n. 螺旋；旋渦；螺旋形之物
- adj. 螺旋形的；盤旋的
- vt. 使成螺旋形；使作螺旋形上升
- vi. 盤旋；成螺旋形；螺旋形上升（過去式spiraled/spiralled，過去分詞spiraled/spiralled，現(xiàn)在分詞spiraling/spiralling，第三人稱單數(shù)spirals，副詞spirally）
英英釋意
- 1. a plane curve traced by a point circling about the center but at ever-greater distances from it
- 2. a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle
- 3. ornament consisting of a curve on a plane that winds around a center with an increasing distance from the center
- 4. a structure consisting of something wound in a continuous series of loops;
- "a coil of rope"
- 5. flying downward in a helical path with a large radius