noun

• (chiefly poetic, dated or archaic) Synonym of fountain (“a natural source of water”); a spring.
  "VVhy ſhould the vvorme intrude the maiden bud? / Or hatefull Kuckcovves [cuckoos] hatch in Sparrovvs neſts? / Or Todes infect faire founts vvith venome mud? / […] / But no perfection is ſo abſolute, / That ſome impuritie doth not pollute."
• (by extension, agriculture, archaic) A device from which poultry may drink; a waterer.
  "A. H. Hews & Co., North Cambridge, Mass. Manufacturers of Poultry Water Founts. Capacities one quart, two quarts, three quarts, and four quarts. For sale, wholesale and retail."
• (figurative) That from which something proceeds; an origin, a source.
  "He is a real fount of knowledge!"

noun

• (British spelling) Alternative spelling of font (“a set of glyphs of unified design, usually representing the letters of an alphabet and its supplementary characters belonging to one typeface, style, and weight; a typeface; a family of typefaces”).
  "Of each Body he provides a Fount ſuitable to ſuch ſorts of VVork as he deſigns to do; But he provides not an equal vvieght^([sic – meaning weight]) of every Fount; Becauſe all theſe Bodies are not in equal uſe: For the Long-Primmer, Pica and Engliſh are the Bodies that are generally moſt uſed; And therefore he provides very large Founts of theſe, viz. of the Long-Primmer in a ſmall Printing-Houſe; Five hundred Pounds vveight Romain and Italica, vvhereof One hundred and fifty Pounds may be Italica."