There could be an entire dictionary to assist you with the slang used in a dance studio, but here are a few to get you started.
Comp Season
Refers to the competition season. Competitions typically start in January, with Nationals held in the summer.
Full Out
Dancing with 100% of your energy and performance
Plie
A smooth and continuous bending of the knees outward with the upper body held upright
Choreography
The composition and arrangement of movement for dances.
8-Count
The manner in which music is counted and broken down.
Ball Change
Ball change is a dance move that consists of two steps: a partial weight transfer on the ball of a foot.