Search Result for "bummer": 
Wordnet 3.0

NOUN (2)

1. an experience that is irritating or frustrating or disappointing;
- Example: "having to stand in line so long was a real bummer"

2. a bad reaction to a hallucinogenic drug; 



The Collaborative International Dictionary of English v.0.48:

bummer \bum"mer\ (b[u^]m"[~e]r), n.
   1. An idle, worthless fellow, who is without any visible
      means of support; a loafer; a dissipated sponger; one who
      bums. [Slang, U.S.]
      [1913 Webster]

   2. an unpleasant event, experience, or situation; as, getting
      caught in a cloudburst while wearing my best suit was a
      bummer. [Slang, U.S.]
      [PJC]


WordNet (r) 3.0 (2006):

bummer
    n 1: an experience that is irritating or frustrating or
         disappointing; "having to stand in line so long was a real
         bummer"
    2: a bad reaction to a hallucinogenic drug