noun
infield fly
Baseball term for a fair fly ball that can be caught by an infielder with ordinary effort, triggering the infield fly rule.
インフィールドフライが宣告されると、打者は自動的にアウトになる。
When an infield fly is declared, the batter is automatically out.
Variant with interpunct, sometimes seen in rulebooks or explanatory contexts.
Borrowed from English 'infield fly'.