birdbrain birdberry • birdcage · · · Info · Definitions · Synonyms · Characters · · birdbrain · · Text Latin · · Script 9 · · Length 2 · · Syllables Definitions · · · (noun) a person with confused ideas; incapable of serious thought. Synonyms: addle-head, addlehead, loon. · · Noun Definition 1 Synonyms · · · addle-head · · Synonym 1 addlehead · · Synonym 2 loon · · Synonym 3 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 d latin small letter d U+0064 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072