an organ that separates waste substances from the blood and discharges them
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This list celebrates the spirit of perserverence by offering a catalog of discouraging words, terms associated with setbacks and the frustration of progress. Although they vary in severity, most of these words deal with temporary roadblocks on one's path -- not snuffing out the candle of inspiration or determination, but just making it flicker. Here are 15 words and some details of their etymologies.