5. (Elec.) One of the pairs of plates of two metals which compose a voltaic battery; -- called a voltaic couple or galvanic couple.
6. (Mech.) Two rotations, movements, etc., which are equal in amount but opposite in direction, and acting along parallel lines or around parallel axes.
&fist; The effect of a couple of forces is to produce a rotation. A couple of rotations is equivalent to a motion of translation.
Cou"ple, v. t. [imp. & p. p. Coupled (k?p"'ld); p. pr. & vb. n. Coupling (-l?ng).] [F. coupler, fr. L. copulare. See Couple, n., and cf. Copulate, Cobble, v.]
1. To link or tie, as one thing to another; to connect or fasten together; to join.
Huntsman, I charge thee, tender well my hounds, . . .
And couple Clowder with the deep-mouthed brach.
Shak.