double-clutch 1
/dub"euhl kluch"/ , v.i. Auto.
to downshift by shifting gears in an automotive vehicle first into neutral and then into the desired gear, releasing the clutch twice, once for each shift.
double-clutch 2
/dub"euhl kluch"/ , v.i.
(of a bird) to produce a second clutch of eggs after the first has been removed, usually for hatching in an incubator.