• Meaning: Leaf (organic/plant).

• Biolinguistics: Acts in the regulation of airflow through the transition between wheezing exhalation and sudden micro-inspiration (ingestion), promoting awareness of the diaphragm.

Psithyrism onomatopoeia (sound of wind passing through foliage).

It derives from the conception of the leaf as the plant's "light clothing", inspired by the fluidity and aerial nature of butterfly wings (la'hāli).