The accused must not have foregone some safe avenue of escape.

Coalition troops then returned and destroyed the berm, as they would need an avenue of escape should withdrawal from the area prove necessary.

Then cut off his lines of communication and avenue of escape.

The prince had recklessly chosen a campsite in a wooded valley with steep sides and few avenues of escape.

Other avenues of escape were similarly useless: side doors had been bolted shut to prevent people from entering without paying.