The Collaborative International Dictionary of English v.0.48:

Veldt \Veldt\, n. [D. veld. Cf. Field, n.]
   A region or tract of land; esp., the open field, thinly
   forested or with bushes and shrubs; grass country. [South
   Africa]
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

veldt
    n 1: elevated open grassland in southern Africa [syn: veld,
         veldt]