L3

Noun

 * 1)   located 180 degrees away from the smaller object and slightly outside the smaller object's orbit around the larger object.

Etymology 2
From 3.

Noun

 * 1)  Short for third level in various contexts
 * 2)  The third-level cache of a processor, farther away from the processor than the second-level cache.
 * 3)  The network layer in the seven-layer OSI network model.