What is "landtrost"

Landdrost \Land"drost`\, n.; pl. -drosten . Sometimes incorrectly Landtrost \Landtrost\ [D., fr. land land + drost a kind of official; akin to G. truchsess.] (In South Africa)

1. A chief magistrate in rural districts. He was replaced in 1827 by ``resident magistrates.''

2. The president of the Heemraad.