Source : WordNet®

Grimm
     n 1: the younger of the two Grimm brothers remembered best for
          their fairy stories (1786-1859) [syn: {Wilhelm Grimm}, {Wilhelm
          Karl Grimm}]
     2: the older of the two Grimm brothers remembered best for
        their fairy stories; also author of Grimm's Law describing
        consonant changes in Germanic languages (1785-1863) [syn:
        {Jakob Grimm}, {Jakob Ludwig Karl Grimm}]