1.
If someone or something tees you off , they make you angry or annoyed. ( mainly AM INFORMAL )
Something the boy said to him teed him off...
That really teed off the old boy.
= tick off
PHRASAL VERB : V pron P , V P n (not pron) , also V n P
2.
In golf, when you tee off , you hit the ball from a tee at the start of a hole.
In a few hours time most of the world’s top golfers tee off in the US Masters.
PHRASAL VERB : V P