rod
noun [ C ] uk/rɒd/ us/rɑːd/
(POLE)
竿，杆，棒
a long, thin pole made of wood or metal
He was given a fishing rod for his birthday. 他得到一根钓鱼竿作为生日礼物。
The concrete is strengthened with steel rods. 混凝土内加入钢筋变得更加牢固。
(IN EYE)
anatomy specialized视杆细胞
a type of cell in the retina (= part at the back of the eye) that helps you to see when there is not much light
Compare: cone noun (IN EYE)
Idiom
make a rod for your own backidiom UK 自讨苦吃；自找麻烦；惹火烧身
If you make a rod for your own back, you act in a way that creates more problems for yourself in the future.
By giving in to the terrorists' demands, the government will simply be making a rod for its own back. 政府要是屈从于恐怖分子的要求就只会惹火烧身。