Definition of chalumeau
plural chalumeaux
\-ōz\
1 a
: a medieval wind instrument consisting of an upright tube surmounted by a small tube in which was fixed a double reed : shawm
b
: an obsolete single-reed wind instrument of varying size that after progressive modifications became the clarinet
2
: chanter 3
3
: the lowest register of the clarinet
—often used as a direction to play a passage an octave lower
4
: a reed organ pipe usually of 8-foot pitch and of clarinetlike tone — called also
schalmei
