the problem of determining which numbers from a given collection of numbers have been added together to yield a specific sum: used in cryptography to encipher (and sometimes decipher) messages.
[nap-weed] /ˈnæpˌwid/ noun 1. any composite plant of the genus Centaurea, especially the weedy C. nigra, having rose-purple flowers set on a dark-colored, knoblike bract. /ˈnæpˌwiːd/ noun 1. any of several plants of the genus Centaurea, having purplish thistle-like flowers: family Asteraceae (composites) See also centaury (sense 2), hardheads
[nahr] /nɑr/ noun 1. a knot on a tree or in wood. /nɑː/ noun 1. a variant of knur
/ˈnɑːlɪ/ adjective 1. (informal) same as gnarly (sense 3)
[neyv] /neɪv/ noun 1. an unprincipled, untrustworthy, or dishonest person. 2. Cards. 1 (def 2). 3. Archaic. /neɪv/ noun 1. (archaic) a dishonest man; rogue 2. another word for jack1 (sense 6) 3. (obsolete) a male servant n. Old English cnafa “boy, male servant,” common Germanic (cf. Old High German knabo “boy, youth, servant,” German […]