batboy
bat boy |ˈbatˌboi ˈbætbɔɪ | ▶noun a boy who is employed to look after and retrieve bats during a baseball game and as a general assistant at other times.
b á t b ò y 名詞 C 〘野球 〙バットボーイ 〘野球チームのバットなど用具の世話をする子供; ⦅男女共用 ⦆batkeeper 〙.