To hold hands with someone (literally to join hands), e.g. as a sign of affection or to walk together.
駅前で恋人と手をつなぐのが好きだ。
I like holding hands with my partner in front of the station.
子どもたちは公園で手をつないで列を作って歩いた。
The children walked in a line holding hands in the park.
お祭りでみんなが輪になって手をつなぐ光景は楽しい。
The sight of everyone joining hands in a circle at the festival is fun.