Wiktionary
butter-box
n. (context archaic slang British English) A derogatory name that British sailors gave the Dutch during the age of the Anglo-Dutch Wars.
Usage examples of "butter-box".
He was on the point of exclaiming 'Thank God Dryad ain't here,' -for even an unhandy butter-box of her size would upset the fairly even match and take all the glory away - when he realized that nothing could be more presumptuous or unlucky, and choking back even the enunciation of the thought he sprang out of his cot, singing 'The lily, the lily, a rose I lay, The bailey beareth the bell away,' in his powerful melodious bass.