noun
opening brace
Refers to the left curly bracket character '{' used in programming, mathematics, and markup.
コードを書くとき、左中括弧の位置に注意してください。
When writing code, pay attention to the position of the opening brace.
Compound of 左 (left), 中 (middle), and 括弧 (bracket). The term describes the left-facing curly bracket character.