The Collaborative International Dictionary of English v.0.48:

benny \benny\ n.
   1. same as benne or benni.

   Syn: sesame, benne, benni, Sesamum indicum.
        [WordNet 1.5]

   2. same as bennie.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

bennie \ben"nie\ n.
   a slang name for Benzedrine, a trademark for one brand of
   amphetamine; -- also used generically for any brand of
   amphetamine. [slang] [Also spelled benny.]

   Syn: Benzedrine.
        [WordNet 1.5 +PJC]

WordNet (r) 3.0 (2006):

benny
    n 1: East Indian annual erect herb; source of sesame seed or
         benniseed and sesame oil [syn: sesame, benne, benni,
         benny, Sesamum indicum]
    2: United States comedian known for his timeing and delivery and
       self-effacing humor (1894-1974) [syn: Benny, Jack Benny,
       Benjamin Kubelsky]