From Longman Dictionary of Contemporary Englishshake somebody’s hand/shake hands with somebodyshake somebody’s hand/shake hands with somebodyHELLOto move someone’s hand up and down with your own hand as a greeting or as a sign you have agreed something He shook my hand warmly. Wilkins shook hands with him. If we have a deal, let’s shake on it (=show that we have made an agreement by shaking hands). → shake
Examples from the Corpus
shake on it• Let's shake on it.• I said, and we shook on it. 