Sentence:  "They could travel no further because of the high mountains which ring in the land, so say the old voices of our fathers that have descended to us the children, and so says Gagool, the wise woman, the <WSD>smeller</WSD> out of witches," and again he pointed to the snow-clad peaks. 
Meaning of the word marked with <WSD> tags:  Someone or something that smells, that detects scent