WordReference Random House Unabridged Dictionary of American English © 2026
eight•y-one
(ā′tē wun′),USA pronunciation n.
adj.
- a cardinal number, 80 plus 1.
- a symbol for this number, as 81 or LXXXI.
- a set of this many persons or things.
adj.
- amounting to 81 in number.
'eighty-one' also found in these entries (note: many are not synonyms or translations):