nlrb nlp • nm · · · Info · Definitions · Characters · · nlrb · · Text Latin · · Script 4 · · Length 1 · · Syllables Definitions · · · (noun) an independent agency of the United States government charged with mediating disputes between management and labor unions. Synonyms: National Labor Relations Board, NLRB. · · Noun Definition 1 Characters · · b latin small letter b U+0062 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072