eighth

名词 eighth:

1. position eight in a countable series of things
2. one part in eight equal parts
   同义词：one-eighth

形容词 eighth:

1. coming next after the seventh and just before the ninth in position
   同义词：8th

1. The eighth day after a feast day, counting the feast day as one.
   第八天教会节日后从该日算起的第八天
2. One of the four brightest satellites of Jupiter and the eighth in distance from the planet. Originally sighted by Galileo, it is one of the largest satellites in the solar system.
   木卫三木星四颗最亮的卫星之一，距木星的远近程度是第八位。最早伽利略观察到，是太阳系最大的卫星之一
3. One eighth of a circle.
   八分圆圆的八分之一
4. August is the eighth month in a year.
   八月是一年中的第八个月。

eighth

n.（名词）
The ordinal number matching the number eight in a series.
第八：在一列中对应于8的序数
One of eight equal parts.
八分之一：八个相等部分之一

来源：
Middle English eighthe
中古英语 eighthe
from Old English eahtotha
源自 古英语 eahtotha
from eahta [eight] * see oktô(u)
源自 eahta [八] *参见 oktô(u)

【引伸】
eighth
adv.（副词）
adj.（形容词）