The Collaborative International Dictionary
Doubler \Dou"bler\, n.
One who, or that which, doubles.
(Elec.) An instrument for augmenting a very small quantity of electricity, so as to render it manifest by sparks or the electroscope.
A part of a distilling apparatus for intercepting the heavier fractions and returning them to be redistilled.
(Calico Printing) A blanket or felt placed between the fabric and the printing table or cylinder.
Wiktionary
n. 1 One who doubles. 2 An instrument for augmenting a very small quantity of electricity, so as to render it manifest by sparks or the electroscope. 3 (cx US dialect English) A tenement house having two families on each floor. 4 (cx colloquial English) A biplane aeroplane or kite. 5 Part of a distilling apparatus for intercepting the heavier fractions and returning them to be redistilled. 6 (cx calico printing English) A blanket or felt placed between the fabric and the printing table or cylinder.
WordNet
n. an electronic device that doubles the voltage or the frequency of an input signal
Usage examples of "doubler".
Three oak barrels stood in a row for the cooker, the doubler, and the cooler.
The thing was complete—microphone, crystal oscillator frequency doubler, power amplifier, modulator, and power enough for several hours’ operation—and it was sensitive enough to pick up ordinary conversation at a distance of several feet and transmit the words to another receiver to which Doc Savage had been listening outside the candy store.
She added, with all the air of one throwing in a doubler: "And of Cordelia Consett!
Before Silas well knew what he was about, he had planted a flush hit to the face, followed it up by a lightning doubler which sent Silas staggering back, and was inside the house, with the door kicked to behind him.