envelopment

noun4

1. •
   The act of enveloping.
2. •
   An offensive action in which an attacking force moves over or around the enemy and attacks from the rear; see also pincer movement.
3. •
   That which envelops; a covering.
4. •
   An action to seize the opponent's blade in one line and lead it (without losing contact) through a full circle to end in the same line.