Bieba (f)
(with) definite article: il (il-Bieba)tongue: vibrating blade of a single reed (idioglot (either up- or down-cut) or heteroglot)
Definition in Ġabra: "one leaf of a door, a cupboard door"; Interestingly, I recognise some similarity .
Starke, Christian: Zaqq: the Maltese bagpipe. In: Anuario da Gaita 2003 (18), p.27.