LXXX

from WordNet (r) 3.0 (2006)

lxxx
    adj 1: being ten more than seventy [syn: {eighty}, {80}, {lxxx},
           {fourscore}]
    n 1: the cardinal number that is the product of ten and eight
         [syn: {eighty}, {80}, {LXXX}, {fourscore}]

from The Collaborative International Dictionary of English v.0.48

lxxx \lxxx\ adj.
   the Roman numeral representation of {eighty}; eight times
   ten; -- a determinate quantifier.

   Syn: eighty, 80, fourscore.
        [WordNet 1.5]

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