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Table of Contents POS
HYPHEN
WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY

coupler

POS

Noun

HYPHEN

cou=pler

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WORDNET DICTIONARY

Noun coupler has 1 sense

coupler(n = noun.artifact) coupling - a mechanical device that serves to connect the ends of adjacent objects; Array

has particulars: clevis, clutch, fluid drive, swivel, turnbuckle, universal, universal joint

is a kind of mechanical device

Derived form verb couple₂

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CIDE DICTIONARY

coupler, n.

One who couples; that which couples, as a link, ring, or shackle, to connect cars. [1913 Webster]

Coupler of an organ, a contrivance by which any two or more of the ranks of keys, or keys and pedals, are connected so as to act together when the organ is played.

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OXFORD DICTIONARY

coupler, n.
1 Mus. a a device in an organ for connecting two manuals, or a manual with pedals, so that they both sound when only one is played. b (also octave coupler) a similar device for connecting notes with their octaves above or below.
2 anything that connects two things, esp. a transformer used for connecting electric circuits.

For further exploring for "coupler" in Webster Dictionary Online