Possible Clues:

• Certain excavation hole
• Excavation site
• In which one sees gritty performances from youngsters?
• Certain excavation hole (2 words)
• Box where British kids use pails and shovels
• Playing area used by batters and pitchers
• Where children may play with spades and where men may work with picks
• Hospital department overlooking untidy place? Children play there
• Bunker, essentially
• Where youngsters play could make you spit!