Sentence:  Falconers use many queer but ancient terms of the condition and ailment of birds of prey. Mr Cooper makes sense out of all that. 'Snurt' seems to me an entirely appropriate name for a runny nose, .... When next I am constipated I shall complain that I have something wrong with my <WSD>‘tewel'</WSD>. 
Meaning of the word marked with <WSD> tags:  The anus, rectum or butt.