Pronunciation: [pˈɪlə͡ʊ slˈɪp] (IPA) 
The spelling of the word "pillow slip" may seem confusing at first glance, but can be broken down using IPA phonetic transcription. The first word, "pillow," is written as /ˈpɪloʊ/, with the primary stress on the first syllable and a long "o" sound. The second word, "slip," is written as /slɪp/, with a short "i" sound followed by a voiceless "p" sound. Together, "pillow slip" refers to a type of covering for a pillow.
A pillow slip, also commonly referred to as a pillowcase, is a removable fabric covering designed specifically to encase a pillow for protection and aesthetic purposes. Typically made of soft materials such as cotton, linen, or silk, a pillow slip is a rectangular-shaped cloth sleeve that serves as a barrier between the pillow and the sleeper's head.
The primary function of a pillow slip is to safeguard the pillow from stains, dirt, oil, and sweat produced by the user during sleep. It acts as a removable and washable layer, ensuring a hygienic and clean surface for the user's head to rest upon. Moreover, a pillow slip can contribute to the longevity of the pillow by helping to prevent wear and tear, as well as maintaining its original shape.
Beyond its practicality, a pillow slip can also serve as a decorative element in bedrooms or on sofas. With countless designs, patterns, and colors available, it can add aesthetic appeal and complement the overall interior décor. This allows users to personalize their sleeping environment and create a comfortable and stylish space.
To use a pillow slip, one simply slides it over the pillow, enclosing it entirely, thus creating a snug fit. The slip usually features an open end, enveloping the pillow without exposing it. This allows for easy removal and replacement of the slip when necessary, facilitating regular laundering and ensuring the freshness and cleanliness of the pillow.
The word "pillow slip" can be broken down into two parts: "pillow" and "slip".
The term "pillow" has its roots in the Middle English word "pilwe", which came from the Old English word "pyle". Both these words referred to a cushion used for resting one's head. The Old English word can be traced back to the Latin word "pulvinus", meaning "cushion" or "bolster".
The word "slip" in this context refers to a covering or case. It can be traced back to the Middle English word "slippe", which meant "a piece cut off". The origin of "slippe" can be found in Old English, where it referred to a portion or strip of fabric.
Therefore, a "pillow slip" literally means a covering or case for a pillow.
