erf

noun
  1. 1

    Inheritance; patrimony.

    โ€œSon, you will have this farm to erf.โ€

  2. 2

    (by extension) Stock; cattle.

noun
  1. 1

    (Cape Colony) A small inherited house-and-garden lot in a village or settlement.

noun
  1. 1

    A sigmoid function giving the probability that a measurement, under the influence of normally distributed errors with standard deviation, is within a certain distance from the mean value.

Source: https://en.wiktionary.org/wiki/erf