batter's box; turn at bat
Baseball term referring to the physical batter's box or a player's opportunity to bat. Often used in phrases like 打席に立つ (step into the batter's box) or 打席に入る (take one's turn at bat).
He stepped into the batter's box looking nervous.
He always concentrates when he steps into the batter's box.
今日は打席が回ってこなかった。
I didn't get a turn at bat today.
The fourth batter took his turn at bat.
In the bottom of the ninth, his turn at bat finally came around.
He got a hit in three consecutive at-bats.
打席 refers to a single turn at bat or the batter's box, while 打順 refers to the fixed order in which players bat.
打数 counts only completed at-bats used to calculate batting average, while 打席 counts every plate appearance including walks and sacrifices.
plate appearances; number of plate appearances
regulation at-bats; required plate appearances
Compound of 打 (da, 'hit') and 席 (seki, 'seat' or 'place'), literally 'hitting place'. The reading だせき is a standard on'yomi compound.