eigh ‧ ty /ˈeɪti/ BrE AmE number
[ Language: Old English ; Origin: eahtatig , from eahta 'eight' ]
1 . the number 80
2 . the eighties [plural] ( also the '80s, the 1980s ) the years from 1980 to 1989:
The band was incredibly successful in the eighties.
the early/mid/late eighties
Their troubles began in the mid eighties.
3 . be in your eighties to be aged between 80 and 89
early/mid/late eighties
Hilda Simpson was a woman in her early eighties.
4 . in the eighties if the temperature is in the eighties, it is between 80 degrees and 89 degrees
in the low/mid/high eighties
The temperature is expected to remain in the low eighties.
—eightieth adjective :
her eightieth birthday