资料来源 : Webster's Revised Unabridged Dictionary (1913)

Oscitancy \Os"ci*tan*cy\, n. [See {Oscitant}.]
   1. The act of gaping or yawning.

   2. Drowsiness; dullness; sluggishness. --Hallam.

            It might proceed from the oscitancy of transcribers.
                                                  --Addison.

资料来源 : WordNet®

oscitancy
     n 1: drowsiness and dullness manifested by yawning [syn: {oscitance}]
     2: an involuntary intake of breath through a wide open mouth;
        usually triggered by fatigue or boredom; "he could not
        suppress a yawn"; "the yawning in the audience told him it
        was time to stop"; "he apologized for his ostinancy" [syn:
         {yawn}, {yawning}, {oscitance}]