detailman
n.— «A “detailman” in industry parlance is one of the pharmaceutical business’ most effective foot soldiers. These salespeople visit doctors door-to-door, bringing free drug samples (and probably free lunch and other handsome carrots) and a sales pitch about the product.» —“Drug Ads—Without Harmful Side Effects” by Amy Tsao BusinessWeek Nov. 8, 2004. (source: Double-Tongued Dictionary)
Further reading
What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...