Answer: handshake

AnswerCrossword Clue
HANDSHAKEComical greeting?
HANDSHAKESymbol of a closed deal.
HANDSHAKEAgreement symbol
HANDSHAKESign of agreement
HANDSHAKEDeal sealer
HANDSHAKEDeal clincher, perhaps
handshakeAn act of shaking a person's hand with one's own, used as a greeting or to finalize an agreement
handshakeA person's particular way of doing this
handshakea shaking of hands in greeting
handshakeAn exchange of standardized signals between devices in a computer network regulating the transfer of data