Sentence:  yama, n.2: Yoga Philos. ii. 17 Râja Yoga is divided into eight steps. The first is Yama—<WSD>non-killing</WSD>, truthfulness, non-stealing, continence, and non-receiving of any gifts. 
Meaning of the word marked with <WSD> tags:  A precept or worldview that affirms the possibility of a society where killing is absent.