Source : Webster's Revised Unabridged Dictionary (1913)

Ladin \La*din"\, n. [From L. Latinus Latin. See {Latin}]
   A Romansch dialect spoken in some parts of Switzerland and
   the Tyrol.

Ladin \La*din"\, n.
   A person speaking Ladin as a mother tongue.

Source : WordNet®

Ladin
     n : a Rhaeto-Romance dialect of Romansh spoken in southeastern
         Switzerland