This page provides all possible meanings and translations of the word dogsbody
a worker who has to do all the unpleasant or boring jobs that no one else wants to do
A person who does menial work, a servant.
A dogsbody, or less commonly dog robber in the Royal Navy, is a junior officer, or more generally someone who does drudge work. A rough American equivalent would be a "gofer" or a "grunt", a "lackey", or "toady".