ram·rod
noun/ˈræmrɒd/
/ˈræmrɑːd/
Idioms - a long straight piece of iron used in the past to push explosive into a gun
（旧时用以将火药推进枪支的）推弹杆，通条
Idioms
ramrod straight | (as) straight as a ramrod
- (of a person) with a very straight back and looking serious and formal
腰杆笔直的；挺立的 - Her back was ramrod straight.
她的背挺得笔直。 - He stood there straight as a ramrod.
他笔直地站在那里。
- Her back was ramrod straight.