bummer 1
/bum"euhr/ , n. Slang.
a person who bums.
[ 1850-55, Amer.; prob. Bummler, deriv. with -er -ER 1 of bummeln to take a stroll, dawdle, loiter (expressive v. of uncert. orig.) ]
bummer 2
/bum"euhr/ , n. Slang.
1. the unpleasant aftermath of taking narcotic drugs, esp. frightening hallucinations or unpleasant physical sensations.
2. any unpleasant or disappointing experience: That concert was a real bummer.
[ 1965-70; appar. BUM 1 (adj. sense) + -ER 1 ]