• (n.) One who garbles.
Gar'bler noun One who garbles. 
A garbler was formerly an officer of the city of London, vested with power to enter any shop, warehouse, etc, to examine drugs and Spices, and garble (sift out the coarse parts, dirt, etc) and make clean the same, or see that it were done. The office was extinct by the end of the 19th century.