Handshake
Shaking Hands
noun, verbal noun
A grip with your hand (onto another hand) is a handshake.
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.)
An update is needed before you can continue but you have more than one WaniKani tab open.
Finish up what ever you are doing on the other tab(s), then close them to continue.
The update will complete automatically once the other tab(s) are closed.