a.

1. 帝国的；（常大写）大英帝国的
   By then Britain as an imperial power had declined.

   到那时，英国作为一个帝国已经衰落。

2. 皇帝（或女皇）的；最高（权力）的
   an imperial crown

   帝冠

3. 专横的；威严的；宏大的
   Uncle is well known for his imperial generosity.

   叔父的宽宏大量是出了名的。

4. （商品等）特优的；特大的
5. （度量衡）英制的

n.

1. （蓄于下唇下的小绺胡须）皇帝髯[C]

adj.

1. relating to an empire or an emperor.
   ▸characteristic of an emperor; magnificent.
2. relating to or denoting the system of non-metric weights and measures formerly used for all measures in the UK, and still used for some.
3. chiefly historical (of a size of paper) measuring (in the UK) 762 × 559 mm (30 × 22 inches).

n.