2
the sport of swimming underwater with special breathing equipment
4
a piece of equipment made of a large piece of special cloth that is fastened to a person or thing that is dropped from an aircraft, in order to make him, her, or it fall slowly and safely to the ground
5
a sport in which a person jumps from an aircraft and falls for as long as possible before opening a parachute
10
to stop talking or making a noise, or to make someone do this.
11
strong, hard hat that covers and protects the head
12
a single action of breathing air into your lungs
