aar aam • aardvark · · · Info · Definitions · Characters · · aar · · Text Latin · · Script 3 · · Length 2 · · Syllables Definitions · · · (noun) a river in north central Switzerland that runs northeast into the Rhine. Synonyms: Aare, Aar, Aare River. · · Noun Definition 1 Characters · · a latin small letter a U+0061 r latin small letter r U+0072