stump

1. N-COUNT A stump is a small part of something that remains when the rest of it has been removed or broken off. 残余部分

If you have a tree stump, check it for fungus. 如果你有一个树桩，就在上面找找菌类。

2. V-T If you are stumped by a question or problem, you cannot think of any solution or answer to it. 把…难住

John Diamond is stumped by an unexpected question. 约翰·戴蒙德被一个意想不到的问题难住了。

3. V-I If politicians stump for a candidate, they travel around making campaign speeches before an election. (选举前为候选人) 作巡回政治演说[美国英语]

Since September, the president has stumped for Republicans in 23 states. 自9月以来，这位总统已在23个州为共和党人作了巡回政治演说。