The Collaborative International Dictionary of English v.0.48:

Telugu \Tel`u*gu"\, n.
   1. A Darvidian language spoken in the northern parts of the
      Madras presidency. In extent of use it is the next
      language after Hindustani (in its various forms) and
      Bengali. [Spelt also Teloogoo.]
      [1913 Webster]

   2. One of the people speaking the Telugu language.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Telugu \Tel`u*gu"\, a.
   Of or pertaining to the Telugu language, or the Telugus.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Telugu
    n 1: a member of the people in southeastern India (Andhra
         Pradesh) who speak the Telugu language
    2: a Dravidian language spoken by the Telugu in southeastern
       India