- the centimeter-gram-second unit of work or energy, equal to the work done by a force of one dyne when its point of application moves through a distance of one centimeter in the direction of the force; 10−7 joule.
- a vast area covered with sand and shifting dunes, as parts of the Sahara Desert.
- the cgs unit of work or energy. 1 erg is equivalent to 10 –7 joule
- an area of shifting sand dunes in a desert, esp the Sahara
- informal short for ergometer (def. 2)
