What is a bookmaker who hires himself out for any sort of literary work; an overworked man; a drudge. Here lies poor Ned Purdon, from misery freed, Who long was a bookseller's hack. Goldsmith called?

hack — A bookmaker who hires himself out for any sort of literary work; an overworked man; a drudge. Here lies poor Ned Purdon, from misery freed, Who long was a bookseller's hack. Goldsmith. (Webster's 1913.)