ˈninesome,n.anda. [f. nine a. + -some.] a.n. A set of nine. b.adj. Consisting of nine. a1400Morte Arth. 523 Thy nedes..I notifiede myselfene, Be-fore þat noble of name and neynesome of kynges.1887Service Life Dr. Duguid 224 She had an auchtsome or a ninesome family.