a (anatomy) Pertaining to the left or right of the body; further from the midline.
a (rfv-sense|appears unlikely & not found in other dictionaries)(botany) Pertaining to the girth of an organ, rather than its thickness or length.
a (linguistics) Pertaining to sounds that are generated by partially blocking the egress of the airstream with the tip of the tongue touching the alveolar ridge, leaving space on one or both sides of the occlusion for the air passage.
n an object, such as a passage or a protrusion, that is situated on the side of something else
n (linguistics) a sound produced through lateral pronunciation (such as /l/ in lateral)