D defs.my
Entry 4 senses Webster, 1913

Doubler

· Dou·bler · IPA
01 n. One who, or that which, doubles.
  1. 1.
    One who, or that which, doubles.
  2. 2.
    An instrument for augmenting a very small quantity of electricity, so as to render it manifest by sparks or the electroscope.(Elec.)
  3. 3.
    A part of a distilling apparatus for intercepting the heavier fractions and returning them to be redistilled.
  4. 4.
    A blanket or felt placed between the fabric and the printing table or cylinder.(Calico Printing)