Possible Clues:

• Limits some of the unambitious
• Scope or extent
• Sphere of action
• Scope found in Lamb, it seems
• The thing a doctor carries on his round
• Seems I'm not all there, so I get bitten
• Beginning to address many burning issues, to an extent
• So I am not all there - that's the limit
• Circuit, compass
• Scope, extent, bounds