FO'RENOON, noun The former part of the day, from the morning to meridian or noon. We usually call the first part of the day, from the dawn to the time of breakfast, or the hour of business, the morning, and from this period to noon, the forenoon But the limits are not precisely defined by custom.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI