Definitions

1. noun

a gesture of greeting or goodwill, typically made by grasping the other person’s hand and shaking it.

“He extended his hand for a handshake before the meeting.”

2. verb

to greet or seal a bargain by grasping the other person’s hand and shaking it.

“The two companies will handshake on the deal next week.”

3. noun

a business agreement or contract, especially one that is informal.

“The two companies had a handshake to supply the new equipment.”