TO MULLER A HAT, verb. phr. (obsolete).To cut down a chimney-pot hat into the low-crowned MULLER. [From Müller, who murdered Mr. Briggs on the Brighton Railway, and tried to disguise himself by this means.]
1864. Builder, Nov. One murderer gave us the word burke; a second appears likely to add to the vocabulary of trade. In a small shop not far from Sloane-square, Chelsea, may be seen the following tasteful announcement: Hats MULLERD here!