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From The Collaborative International Dictionary of English v.0.48:
No \No\ (n[=o]), n.; pl. Noes (n[=o]z). 1. A refusal by use of the word no; a denial. [1913 Webster] 2. A negative vote; one who votes in the negative; as, to call for the ayes and noes; the noes have it. [1913 Webster]