Pronunciation: [pˈiːn] (IPA) 
The word "peen" is spelled with two e's, but pronounced as a single syllable with a long e sound. Its IPA phonetic transcription is /piːn/. The word is commonly used to refer to the flat end of a hammer's head used for striking or shaping metal. It may also be spelled as "pein" in certain contexts. It is important to correctly spell and pronounce words to effectively communicate and avoid misunderstandings.
Peen is a noun that refers to the end opposite the face of a hammerhead or tool, usually having a flat or spherical shape. It is the striking surface at one end of a hammer that is not the face or the claw.
The peen, also known as the pein, is an integral part of certain types of hammers, particularly ball-peen hammers. The peen is often rounded or shaped like a hemisphere to allow for different striking surfaces. It is used for shaping, riveting, or striking objects by applying concentrated force.
The size and shape of the peen can vary depending on the intended use and functionality of the tool. For example, a ball-peen hammer typically features a rounded peen on one side and a striking face on the other. The rounded peen is frequently employed for shaping metal, while the flat face is utilized for striking nails or other objects.
The term "peen" can also be used as a verb, meaning to strike or shape using a peen, as in "he peened the metal into the desired form."
Overall, peen refers to the striking or shaping end of a hammer or tool and plays an essential role in various metalworking and construction tasks.
The word "peen" was first recorded in the English language in the late 15th century. It is a noun that refers to the end of a hammer head opposite the face, which is typically flat. The exact etymology of "peen" is uncertain, but it is believed to have derived from the Old English "pēne" or "péne", which meant a type of hammer. This Old English term likely originated from the Proto-Germanic word "*panan", meaning "to beat". The word "peen" has remained relatively unchanged over the centuries and continues to be used in the context of hammers and metalwork.
