Groote-Bok (m)
(with) definite article: deDutch name in Verschuere Reynvaan, who defines it as "the name of a certain wind instrument"; NB: ➺ Poolsche-Bok.
Verschuere Reynvaan, J. [Joos]: Muzijkaal kunstwoordenboek, ..., [vol. 1: A-M]. Amsteldam, MDCCXCV [i.e. Amsterdam, 1795], p.346.