Serif

In typography, serifs are semi-structural details on the ends of some of the strokes that make up letters and symbols. A typeface with serifs is called a serif typeface (or serifed typeface). A typeface without serifs is called sans serif or sans-serif, from the French sans, meaning “without”. Some typography sources refer to sans-serif typefaces as "Grotesque" (in German "grotesk") or "Gothic", and serif typefaces as "Roman".