vallecula /vəˈlekyələ, vəˈlɛkjələ 
/ ▸ noun (plural valleculae /-ˌlē, -ˌlī/) Anatomy & Botany a groove or furrow. – DERIVATIVES vallecular /-lər/ adjective – ORIGIN mid 19th century : from a late Latin variant of Latin vallicula, diminutive of Latin vallis ‘valley’.
EnglishOxford New American Dictionary
