The Collaborative International Dictionary of English v.0.48:

Clarionet \Clar`i*o*net"\, n. [See Clarion, Clarinet.]
   (Mus.)
   See Clarinet.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Clarinet \Clar"i*net`\, n. [F. clarinette, dim. of clarine, from
   L. clarus. See Clear, and cf. Clarion.] (Mus.)
   A wind instrument, blown by a single reed, of richer and
   fuller tone than the oboe, which has a double reed. It is the
   leading instrument in a military band.

   Note: [Often improperly called clarionet.]
         [1913 Webster] clarinetist

The Devil's Dictionary (1881-1906):

CLARIONET, n.  An instrument of torture operated by a person with
cotton in his ears.  There are two instruments that are worse than a
clarionet -- two clarionets.