These are some basketball terms. I'm only listing the ones used in the story, so casual readers have an idea. For more details, check the wiki.
0-9
3-and-D Any player, typically not a star, who specializes mainly in three-point shooting ("3") and defense ("D"). The term is most often used in the NBA, where this specific skill set has been increasingly valued in the 21st century.
three seconds rule A rule which requires that a player shall not remain in the opponent's restricted area for more than three consecutive seconds while the player's team is in control of a live ball in the frontcourt and the game clock is running.
A
air ball An unblocked shot that fails to hit the rim or backboard.
alley-oop An offensive play in which a player throws the ball up near the basket to a teammate (or, more rarely, to themself) who then jumps, catches the ball in mid-air, and immediately scores a basket, often with a slam dunk.
and-one A free throw awarded to a shooter who is fouled while scoring, especially one which is made.
assist A pass to a teammate who scores a basket immediately or after one dribble.
B
backdoor cut An offensive play in which a player on the perimeter steps away from the basket, drawing the defender along, then suddenly cuts to the basket behind the defender for a pass.
ball hog A player who frequently chooses not to pass the ball to their teammates, especially one who eschews sharing the ball in order to attempt difficult shots.
back screen An offensive play in which a player comes from the low post to set a screen for a player on the perimeter.
ball fake Also called a pass fake. A sudden movement by the player with the ball intended to cause the defender to move in one direction, allowing the passer to pass in another direction.
bank shot A shot that hits the backboard before going through the net.
baseline Also called the end line. The line that marks the playing boundary at either end of the court.
basket Used interchangeably with goal, hoop, and net. The goal in the game of basketball, consisting of a net suspended from a hoop 18 inches (46 cm) in diameter and 10 ft (305 cm) above the ground. In regulation contexts it is attached to a backboard.
basket cut A cut toward the basket.
big man Any low-post player who is physically large relative to other players, especially one who plays the position of center or power forward.
blindside screen A screen set directly behind a defender where the player cannot see it.
block To tip or deflect a shooter's shot, altering its flight so that the shot misses.
blocking foul A violation in which a defender steps in front of a dribbler but is still moving when they collide.
brick A shot attempt that hits the rim and bounces off without hitting the backboard or going in the basket.
buzzer beater A basket that is scored with zero seconds on the game clock (released right before the buzzer sounds), especially one which results in a win or a tie that leads to overtime play.
C