1. a gripping and shaking of right hands by two individuals, as to symbolize greeting, congratulation, agreement, or farewell.
2. Also, handshaking. Computers. an exchange of predetermined signals between a computer and a peripheral device or another computer, made when a connection is initially established or at intervals during data transmission, in order to assure proper synchronization.
"smiles can be handshakes."
"slogans can be handshakes."
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