an experience that is irritating or frustrating or disappointing
"having to stand in line so long was a real bummer"
a bad reaction to a hallucinogenic drug
A forager, especially in Sherman's March to the Sea of November to December 1864.
A disappointment, a pity, a shame.
homosexual male
comparative form of bum: more bum
Exclamation of annoyance or frustration at a bummer (disappointment).