noun
ground-rule double
A baseball term for a two-base hit awarded when a fair ball bounces over the outfield fence or is otherwise unplayable under ground rules. Wasei-eigo from 'entitled two-base hit'.
wasei-eigo (Japanese-coined English)
打球がワンバウンドでフェンスを越えたため、エンタイトルツーベースが宣告された。
The ball bounced over the fence, so a ground-rule double was called.
Variant with interpunct; less common but seen in some sources.
二塁打 is the general term for a double (two-base hit), while エンタイトルツーベース specifically refers to a ground-rule double.
Wasei-eigo from English 'entitled two-base hit'. The term is used exclusively in Japanese baseball.