Open English Wordnet
Nouns
(n)integrity, unity, wholenessan undivided or unbroken completeness or totality with nothing wanting“the integrity of the nervous system is required for normal development”,
“he took measures to insure the territorial unity of Croatia” (n)one, 1, I, ace, single, unitythe smallest whole number or a numeral representing this number“he has the one but will need a two and three to go with it”,
“they had lunch at one”