Definition of the word drop by

The phrase "drop by" is a common colloquial expression used in English-speaking countries to invite someone to pay a brief and uncertain visit. The expression originated in the late 19th century, as a shortening of the phrase "drop in," which came from the nautical term "drop anchor" or "drop down." In the late 1800s, "drop in" became a popular term in Britain, particularly in American English, to mean an unscheduled or unexpected visit. It also came to be used as a more polite and less direct alternative to simply dropping by without giving prior notice. However, the phrase "drop by" became more popular in the 1940s and 50s, particularly in the United States, as a contraction of "drop in by" or "drop over by," which made it a more concise and convenient invitation. The expression "drop by" is still widely used today, especially in informal settings, and has become a common part of everyday language. In essence, "drop by" is a friendly invitation to come and see someone without a specific time or reason being given.