A person who makes, manufactures, or works with cardboard boxes and cartonnage materials.
From French cartonnier (from carton plus the agent suffix '-nier,' similar to English '-er'), describing someone who works in the cardboard and box-making industry.
The French suffix '-nier' creates job titles like 'cartonnier,' 'drapier' (cloth maker), or 'canonnier' (cannoneer)—it's a elegant way to turn a material into the person who works with it, and English speakers often use these French occupational words.
Complete word intelligence in one call. Free tier — 50 lookups/day.