Common casual abbreviation of バスケットボール, used in everyday conversation.
See also: バスケットボール
放課後、体育館でバスケをしよう。
Let's play basketball in the gym after school.
After school, we played basketball in the park.
彼はバスケが大好きで、毎週末コートに行く。
He loves basketball and goes to the court every weekend.
Tonight I'm going to watch a basketball game.