butcher’s apron
n.— «The drafting of the treaty sparks a split in the column, which rather predictably plays out as a schism between the brothers, with Teddy accepting its terms while Damien refuses to be a slave to the Union Jack, or “the butcher’s apron,” as he calls it.» —“Film: Under the red, white and blue” by Ryan Gilbey New Statesman (London, England) June 26, 2006. (source: Double-Tongued Dictionary)