Definition of the word touch on

The phrase "touch on" originally meant to come close to or approach a particular topic or subject without fully addressing it. This expression originated in the Middle English language around the 14th century, where it was spelled "letechen" and pronounced "letchen." Over time, it evolved to the modern spelling and pronunciation of "touch on." The phrase "to letch" is believed to have originated from the Old Norse word "lekkr," meaning "to desire, crave, or be eager for," which was introduced to the English language by way of Viking invasions. In Middle English, "letchen" took on the meaning of "gaze intently, particularly in a suggestive or lustful manner," as it was associated with vulgar or risqué behaviors related to sexual desire. During the 16th century, the term "letchon" began to emerge, which meant "to discuss briefly or lightly touch upon; to approach a topic indirectly." By the 19th century, the phrase had evolved into "touch on," with the same meaning. In modern times, the expression "touch on" is widely used in written and spoken English to indicate a passing discussion or brief explanation of something without going into detail. The origin of the phrase might have transformed into a more common saying, but its roots in historical English add an interesting dimension to popular language.