DuckCorp Dico

Found one definition

1.                 From Japanese-German FreeDict Dictionary ver. 0.2.0:
                   
   
   
                   
                     
    [news2]  [nf38]  寸 /(en)tʃˈaɪniːz(ja)lˈe̞tə/,  [news2]  [nf38] すん /sˈɯᵝɴ/
   (noun (common) (futsuumeishi))
   (1) (n) Sun (Längeneinheit von ca. 3,03 cm), (2) (f) Länge, (3) geringe (f) Größe, (4) kleine (f) Menge