1. begin or cause to begin
kick things off, kick off the show, kick-off at 7pm
To 'kick-off' means to begin or start. 'The race will kick off at 3 pm.' It can also mean to cause to begin. 'The festival will kick off with a variety of musicians.' If someone 'kicks off' it can mean they become angry or aggressive. 'He just kicked off and started shouting at me'.