The Collaborative International Dictionary of English v.0.48:

Rand \Rand\ (r[a^]nd), n. [D.] (D. pron. r[.a]nt)
   Rim; edge; border. [South Africa]

   2. The monetary unit of the Union of South Africa.
      [PJC]

   The Rand, a rocky gold-bearing ridge in South Africa, about
      thirty miles long, on which Johannesburg is situated;
      also, the gold-mining district including this ridge.
      [Webster 1913 Suppl.]