The Collaborative International Dictionary of English v.0.48:

Elbow \El"bow\, v. t. [imp. & p. p. Elbowed; p. pr. & vb. n.
   Elbowing.]
   To push or hit with the elbow, as when one pushes by another.
   [1913 Webster]

         They [the Dutch] would elbow our own aldermen off the
         Royal Exchange.                          --Macaulay.
   [1913 Webster]

   To elbow one's way, to force one's way by pushing with the
      elbows; as, to elbow one's way through a crowd.
      [1913 Webster]

WordNet (r) 3.0 (2006):

elbowing
    n 1: jostling with the elbows; "elbowing is a foul in
         basketball"