4 definition by Rahul Yukich

Muscle group in the legs composed of 4 different muscles. Look best when striated and HUGE (30+ inches)

The atrophying of muscle as opposed to anabolism

An addicting Yahoo! game in the same vein as Tetris in which players manage their stack of colored blocks by making rows and simultaneously undermining their opponents structure.

A miscalculation or incorrect analysis in a chess problem