Tshethar (pron. "tsay tar") means freeing or releasing life in Tibetan, and refers to a cultural practice of saving the life of animals that were destined to be killed by others.
I thought of this when I needed a screen name because fish caught in lakes and rivers and brought to the market were one of the animals traditionally released in this way. (People would buy them and give them their lives back where they had come from, at least ideally.) For my purposes, it captured something of an ethos I was exposed to as a college student in India and Nepal, which has to do with ahimsa (non-harming/non-injury/non-violence) and the notion that like us, other living, sentient beings want happiness and don't want suffering, and on that basis deserve our care and compassion.
So, there's some philosophy for you...