| 4. | tee off, | a. | Golf. to strike the ball from a tee. | | b. | Slang. to reprimand severely; scold: He teed off on his son for wrecking the car. | | c. | Informal. to begin: They teed off the program with a medley of songs. | | d. | Baseball, Softball. to make many runs and hits, esp. extra-base hits: teeing off for six runs on eight hits, including three doubles and a home run. | | e. | Baseball, Softball. to hit (a pitched ball) hard and far: He teed off on a fastball and drove it into the bleachers. | | f. | Boxing. to strike with a powerful blow, esp. to the head: He teed off on his opponent with an overhand right. | | g. | Slang. to make angry, irritated, or disgusted: She was teed off because her dinner guests were late. | |
[tee] 
noun, verb, teed, tee⋅ing.