Sentence:  > Now, look here. If you're going to introduce multiple sheep into this thread, the least you could do is call them sheepae./ > (Pronounced “sheep-eye”?)/ “Sheep” is plural… the singular is “<WSD>shoop</WSD>” (analogy “feet/foot”, “teeth/tooth”)… 
Meaning of the word marked with <WSD> tags:  A sheep; "specifically singular form of '''sheep'''''.