slate pencil

/S L EY1 T P EH1 N S AH0 L/
noun
  1. 1

    A pencil designed to be used on a writing slate.

  2. 2

    A hard, grey coloured, aniseed flavoured, sugar-based confectionery in the shape of a rod or stick.

Source: https://en.wiktionary.org/wiki/slate%20pencil