
1) Woodwind instrument
Found on
https://www.crosswordclues.com/clue/bocal

A bocal is a curved, tapered tube, which is an integral part of certain woodwind instruments, including double reed instruments such as the bassoon, contrabassoon, English horn, and oboe d`amore, as well as the larger recorders. In the double reed instruments, the bocal connects the reed to the rest of the instrument; in the case of larger record....
Found on
http://en.wikipedia.org/wiki/Bocal

• (n.) A cylindrical glass vessel, with a large and short neck.
Found on
http://thinkexist.com/dictionary/meaning/bocal/

(from the article `wind instrument`) ...bore doubled back within the same block and ending in a small bell. It was activated by a long, carefully trimmed double reed connected with the ...
Found on
http://www.britannica.com/eb/a-z/b/84
Bo'cal noun [ French] A cylindrical glass vessel, with a large and short neck.
Found on
http://www.encyclo.co.uk/webster/B/73

A bocal is a cylindrical glass jar with a short, wide neck used for preserving solid substances.
Found on
http://www.probertencyclopaedia.com/browse/AB.HTM
No exact match found.