From Wiktionary, the free dictionary
butterbox (plural butterboxes)
- A wooden box in which butter is contained.
1938, Norman Lindsay, Age of Consent, 1st Australian edition, Sydney, N.S.W.: Ure Smith, published 1962, →OCLC, page 48:A twelve-by-fourteen canvas would not pin in his box, so he had to make a stretcher for it, and very neatly he made it, out of strips of butter-box.
- (US, regional) The bufflehead duck.
