[not the thing] {n. phr.} Not the accepted form of action; […]

[number one] (1) or [Number One] (1) {n. phr.}, {informal} Yourself; […]

[nut case] {n. phr.} A very silly, crazy, or foolish person. […]

[nuts and bolts of] {n. phr.} The basic facts or important […]

[odd jobs] {n. phr.} Work that is not steady or regular […]

[odds and ends] {n. phr.} Miscellaneous items; remnants. * /After the […]

[off day] {n. phr.} A period when one is not functioning […]

[old boy network] {n. phr.} A system whereby men who went […]

[old college try] {n. phr.} An attempt to win a favor […]

[old country] {n. phr.} Primarily Europe, but also any country other […]