Hypertext Webster Gateway: "coupler"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Copula \Cop"u*la\, n. [L., bond, band. See {Couple}.]
1. (Logic & Gram.) The word which unites the subject and
predicate.
2. (Mus.) The stop which connects the manuals, or the manuals
with the pedals; -- called also {coupler}.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Coupler \Coup"ler\ (k?p"l?r), n.
One who couples; that which couples, as a link, ring, or
shackle, to connect cars.
{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.
From WordNet (r) 1.7 (wn)
coupler
n : a mechanical device that serves to connect the ends of
adjacent objects [syn: {coupling}]
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