Tercia (f)
(with) definite article: la2nd piece of a composed drone; the outermost piece of smaller drones
If present: centre tuning piece of the drone.
Estévez Vila, Xaime: A gaita no eido da música [The [Galician] bagpipe in the field of music]. Vigo, 1987, p.25.
García-Oliva Mascarós, Alfonso: Museo de la Gaita: catálogo de las cornemusas del Museo de la Gaita de Gijón. Gijón, s.a. [1992], p.18, 164.
Castro Macía, Luís: Diccionario Xerais Galego-Castelán || Castellano-Gallego. Vigo, 2001