handfast /ˈhændˌfɑːst/

• 1. 

  N an agreement, esp of marriage, confirmed by a handshake 以握手确定的(结婚)约定

• 2. 

  V to betroth or marry (two persons or another person) by joining the hands 手拉手以(使两人或另一人)订婚或结婚