Handshake, Shaking Hands
noun, verbal noun
A grip with your hand (onto another hand) is a handshake.
あくしゅ
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own. With 手 just think back to other vocab words that use the on'yomi reading.
CDを買うと、オマケで握手券が二枚ついてきた。
I bought a CD that came with two handshake tickets as a bonus. (Handshake tickets are similar to meet and greet tickets.)