n.

1. 照明，照亮[U]
   The library's reading-rooms need better illumination.

   图书馆里阅览室的灯光不够明亮，需要改进。

2. 【物】照度[U]
3. 阐明，解释；启发[U]
   He sought illumination from the works of the great philosophers.

   他从伟大哲人的著作中寻求启迪。

4. 灯彩，灯饰[P]
   We are going to town to see the illuminations.

   我们进城去看彩灯。

5. （手稿页面及起首字母等的）彩饰，图案花饰[P]

n.

1. lighting or light.
   ▸ (illuminations) lights used in decorating a building or other structure.
2. the action of illuminating.
3. understanding or enlightenment.