What is "anjaneyasana"

Anjaneyāsana is an asana. The name Anjaneya is a matronymic for Hanuman whose mother's name is Anjani. Hanuman is a central figure in the epic Rāmāyaṇa and an important Iṣṭa-devatā in devotional worship. The name crescent pose is typically used in English. The name half-moon pose is sometimes used for this asana in Sivananda yoga and its derivative styles.