What starts with E but only has one letter in it?

This clever word puzzle relies on our understanding of a common word with two distinct meanings. The trick lies in interpreting "letter" not just as a character in the alphabet, but also as a written message or piece of correspondence. It's a playful linguistic twist that makes us think beyond the obvious, guiding us to consider the practical function of objects rather than just their spelling.

The answer to this intriguing riddle is an envelope. An envelope perfectly fits the description because it begins with the letter 'E', and its primary purpose is to hold a single piece of mail, which is often referred to simply as "a letter." So, while the riddle might initially make you ponder words like "eye" or "ear," the true solution cleverly uses the functional aspect of an everyday item designed to transport written communication securely.

Envelopes have a fascinating history, evolving significantly over millennia to protect our communications. The earliest known "envelopes" were actually clay spheres used by Sumerians around 2600 BCE to encase tokens. Later, ancient Egyptians used papyrus to fold and seal important messages. The Chinese are credited with creating the first paper envelopes around 200 BCE, initially for monetary gifts rather than messages. It wasn't until the 19th century, with the introduction of adhesive postage stamps and the invention of envelope-making machines by Edwin Hill and Warren De La Rue in 1845, that the modern, mass-produced envelope became widely accessible for personal and business correspondence.