noun
1
- a horizontal support on a ladder for a person's foot梯子横档, 梯级。
1.1
- figurative a level in a hierarchical structure, especially a class or career structure〈喻〉梯级, 梯阶（尤指社会等级或职业结构）：
we must ensure that the low-skilled do not get trapped on the bottom rung.
我们必须确保低技能工人不致陷入社会的最底层。
2
- a strengthening crosspiece in the structure of a chair（椅子的）横档。
派生词
runged
adjectiverungless
adjective词源
Old English hrung (in sense 2); related to Dutch rong and German Runge.