It is a lateral consonant. This means that this sound is produced by directing the airstream over the sides of the tongue, but not down the middle.
The manner of articulation (how the sound is produced) is approximant. This means that this sound is produced by narrowing the vocal tract at the place this sound is produced. However, it is not narrowed enough to produce a turbulent airstream.
It is an oral consonant. This means that air is allowed to escape through the mouth only.