Coupler
Pronunciation : Coup"ler (kp"lr)
Part of Speech : n.
Definition : Defn: 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.
Source : Webster's Unabridged Dictionary, 1913