Definition of have a hand in
- She had a hand in designing the new highway.
- Did he have a hand in this decision?
: the forelimb segment (such as the terminal section of a bird's wing) of a vertebrate higher than the fishes that corresponds to the hand irrespective of its form or functional specialization
: a part serving the function of or resembling a hand: such as
: with the hands rather than by machine
: to touch or manage with the hands
: to lead, guide, or assist with the hand
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