Sentence:  "What if you were called a <WSD>"scut</WSD> puppy"?" / "When I first started I was one. A <WSD>"scut</WSD> puppy" is usually a medical student or a nurse who does menial tasks. That's how a person learns in the beginning. We are under others who will teach us and work our tails off." 
Meaning of the word marked with <WSD> tags:  Distasteful work; drudgery; specifically  some menial procedure left for a doctor or medical student to complete, sometimes for training purposes.