apiece

副词 apiece:

1. to or from every one of two or more (considered individually)
   同义词：each, to each one, for each one, from each one

1. The apples are five cents apiece.
   这些苹果5美分一个。
2. She gave the boys a dollar apiece.
   她给孩子们每人一美元。

a.piece

adv.（副词）
To or for each one; each:
各，每：各个，就每个而论；各，每：
例句：
There is enough bread for everyone to have two slices apiece.
这儿有足够的面包，每人可吃两块

来源：
Middle English a pece
中古英语 a pece
a [a] * see a 2
a [不定冠词，表一个] *参见 a2
pece [piece] * see piece
pece [一部分，一段] *参见 piece