An act or means of sealing off a place to prevent goods or people from entering or leaving. The naval blockade prevented any ships from entering the harbor.
An obstruction or hindrance. The protesters formed a blockade to stop the construction vehicles from entering the site.
A medical procedure in which the conduction of nerve impulses is deliberately interrupted, typically by injection of an anesthetic agent. The patient received a femoral nerve blockade before surgery to reduce postoperative pain.