In typography, a slab serif font (also called mechanistic, square serif or Egyptian) is a type of serif typeface characterized by thick, block-like serifs. Serif terminals may be either blunt and angular (Rockwell), or rounded (Courier).
Slab serif typefaces generally have no bracket (feature connecting the strokes to the serifs). Some consider slab serifs to be a subset of modern serif typefaces.
Because of slab serif font's bold appearance, they are most commonly used in large headlines and advertisements but are seldom used in body text. The exception is those that are monospaced, because of their usage in typewriters, but that is declining as electronic publishing becomes more common. Another recent exception is the typeface designed for The Guardian newspaper in the UK which is an Egyptian used through the paper as body text. Read more about slab serif fonts on Wikipedia.
