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English Thesaurus

1. the cardinal number that is the sum of eight and one (noun.quantity)

hypernym	:	digit, figure,
definition	:	one of the elements that collectively form a system of numeration (noun.quantity)

2. denoting a quantity consisting of one more than eight and one less than ten (adj.all)

similar	:	cardinal,
definition	:	being or denoting a numerical quantity but not order (adj.all)