For each definition, select the correct word from the four optio.. STOP THIEF! A thief has stolen one letter from each correct answer, making it harder for you to spot!
A blockade is an attacking maneuver, where attackers try to keep people hemmed in, as in a siege. A defensive barrier is the reverse, where the people in the middle are trying to keep attackers out.
"An act or means of sealing off a place to prevent goods or people from entering or leaving."