9. The idiom beg the question is a translation of the Latin rhetorical term petitio principii and its original meaning is “to assume the truth of the very point under discussion.” For example, to answer the question “Can we afford another employee?” by stating how convenient it would be to have another employee would be begging the question. This idiom was then taken to mean “to evade the issue or avoid the question,” a natural assumption if one is unfamiliar with the original meaning. The most recent, and now quite common, sense is “to raise the question”: His success begs the question: what will be his next project? However, the original meaning, having to do with a fallacy of reasoning or argument, is useful and in fact many people favor restricting the phrase to this meaning.

Did you mean legged?