a person or thing that couples or links together.
Machinery. a rod or link transmitting force and motion between a rotating part and a rotating or oscillating part.
Also called coupling. Railroads. a device for joining pieces of rolling stock.
a device in an organ or harpsichord for connecting keys, manuals, or a manual and pedals, so that they are played together when one is played.
Electricity. a device for transferring electrical energy from one circuit to another, as a transformer that joins parts of a radio apparatus together by induction.
(in color photography) a chemical that reacts with the developer to produce one of the colors in a print or transparency.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use coupler in a sentence
It achieves higher CFM than the competition, thanks to a high flow air regulator and couplers, providing excellent tool performance.Best air compressor: The low-key, must-have tool for your home shop or garage | Irena Collaku | July 7, 2021 | Popular-Science
The nut is in a different part of the coupler assembly than the loose bolts found in the latest uncoupling incident.Loose bolts identified in two recent Metro train separations on Red Line | Justin George | December 2, 2020 | Washington Post
An octave coupler without such extension is incomplete and is no more honest than a stop which only goes down to Tenor C.
Not only did he provide sub-octave and super-octave couplers freely, but he even added a Swell Sub-quint to Great coupler!
Most large organs now built are furnished with a pedal for reversing the position of the Great to Pedal coupler.
When playing upon a soft combination on the Great, the organist may draw the Swell to Great "pizzicato" coupler.
We might lend him a coupler hundred bones at ten per cent., secured by a mortgage on the Maggie, if he's up agin it hard.Captain Scraggs | Peter B. Kyne
British Dictionary definitions for coupler
a link or rod transmitting power between two rotating mechanisms or a rotating part and a reciprocating part
music a device on an organ or harpsichord connecting two keys, two manuals, etc, so that both may be played at once
electronics a device, such as a transformer, used to couple two or more electrical circuits
US and Canadian a device for connecting railway cars or trucks together: Also called (in eg Britain): coupling
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012