a.

1. 神圣的，供神用的[Z]
   Teaching is one of the holiest tasks.

   教书是最神圣的工作之一。

2. 献身于宗教的；虔诚的
3. 圣洁的；至善的
   The poem sings the praises of holy love.

   这首诗歌颂圣洁的爱。

4. 【俚】非常坏的，可怕的[B]
   That precious child of hers is really a holy terror.

   她那个宝贝孩子真是调皮得要命。

adj.

1. dedicated to God or a religious purpose.
2. morally and spiritually excellent.
3. informal, chiefly N. Amer. used in exclamations of surprise or dismay:
   holy cow!