Layout: This term refers to a straight body position in which salto skills are performed.  Almost all twisting skills are done in this position, since it facilitates the twisting process.  Twisting double somersaults, however, are often done in the open position.  There is usually a very subtle arch hollow action used in layout somersaults, which facilitates rotation.  Also called the stretched position.

Layout Step-Out: A tumbling skill used on beam and sometimes on floor.  During a back layout salto the legs are split and the landing is on one foot and then the other.  Most often used now as part of a back tumbling series on beam. 

Leg Circle: A basic and standard pommel-horse move where a gymnast keeps the legs together and swings them in a full circle around the horse, with each hand alternately lifted in turn from the pommel to let the legs pass. It is also performed on some of the other gymnastics apparatuses including floor, parallel bars and balance beam.

Leotard: A one piece, fitted garment, usually made of a light stretch fabric that fits closely to the skin to cover a gymnast’s body. It allows for complete freedom of movement in order to be able to perform any gymnastics skill.  Leotards are worn for classes, practice and competitions.  Long sleeve leotards are required for high-level gymnastics competitions.

Limber: A frontward or backward gymnastics flexibility skill that is similar to a walkover except the legs remain together at all times.  The skill begins on the feet, passes through a handstand and finishes on the feet again in a stand. A front limber requires more shoulder and lower back flexibility than a walkover.

Long Horse: Formerly, the men’s gymnastics apparatus for vaulting. Basically the old vaulting horse was a pommel horse without the pommels and men vaulted over it the long way.  The horse is no longer used for vaulting and has been replaced with the vault table for both men and women.

Lunge: A position often used to initiate and/or land a tumbling or control skill like a cartwheel.   The lunge position is recognizable because the front leg is bent and the back leg is straight.  In general, the arms are by the ears and the body position is in a straight bodyline from the tips of the fingers to the foot on the floor. 
 

Gymnastics Dictionary