n.[C]

1. 螺旋（形）；螺线；蜷线
2. 螺旋形的东西
3. 【空】盘旋
4. （足球的）旋球
5. （物价等）不断加剧的上升（或下降）
6. （螺纹等的）一圈

a.

1. 螺旋（形）的；螺线的；蜷线的
2. 盘旋的

vi.

1. 盘旋；成螺旋形
2. 螺旋形上升（或下降）；不断加剧地增加（或减少）
   Military budgets continued to spiral.

   军事预算继续急遽增加。

vt.

1. 使成螺旋形
2. 使作螺旋形上升（或下降）

adj.

n.

1. a spiral curve, shape, or pattern.
2. a progressive rise or fall of prices, wages, etc., each responding to an upward or downward stimulus provided by a previous one.
   ▸a process of progressive deterioration.

v.

1. take or cause to follow a spiral course.
2. show a continuous and dramatic increase.
   ▸ (spiral down/downward) decrease continuously.