The Collaborative International Dictionary of English v.0.48:

Oliver \Ol"i*ver\, n.
   1. [OF. oliviere.] An olive grove. [Obs.] --Chaucer.
      [1913 Webster]

   2. [F. olivier.] An olive tree. [Obs.] --Chaucer.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Oliver \Ol"i*ver\, n.
   A small tilt hammer, worked by the foot.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Oliver
    n 1: United States jazz musician who influenced the style of
         Louis Armstrong (1885-1938) [syn: Oliver, Joseph
         Oliver, King Oliver]