bunking

from The Collaborative International Dictionary of English v.0.48

Bunk \Bunk\, v. i. [imp. & p. p. {Bunked}; p. pr. & vb. n.
   {Bunking}.]
   To go to bed in a bunk; -- sometimes with in. [Colloq. U.S.]
   --Bartlett.
   [1913 Webster]