Virola (f)
(with) definite article: ladecorative ring slipped around a tube, preventing the wood from cracking
García-Oliva uses the term, without distinction, for both mount and ferrule (➺ Virola (non-protruding ring)).
García-Oliva Mascarós, Alfonso: Museo de la Gaita: catálogo de las cornemusas del Museo de la Gaita de Gijón. Gijón, s.a. [1992], p.48, 74, 81, 86, 164.