tee

1 tee /ˈtiː/ noun
plural tees
1 tee
/ˈtiː/
noun
plural tees
Britannica Dictionary definition of TEE
[count]
1 
a  : a small peg on which a golf ball is placed so that it can be hit
b  : an object that is used for holding a football in position so that it can be kicked
c  chiefly US : a post on which a baseball is placed so that a child can hit the ball with a bat in T-ball
2 
: the area from which a golf ball is first hit to start play on a hole

to a tee

: in a perfect or exact way
2 tee /ˈtiː/ verb
tees; teed; teeing
2 tee
/ˈtiː/
verb
tees; teed; teeing
Britannica Dictionary definition of TEE

tee off

[phrasal verb]
1 
: to hit a golf ball for the first time on a hole or in a round
2 
tee off (someone) or tee (someone) off US, informal : to make (someone) angry — see also teed off
3 
tee off on (someone or something) US, informal : to speak about (someone or something) in an angry way

tee up

[phrasal verb]
tee up or tee (a ball) up or tee up (a ball)
: to place (a ball) on a tee