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Pajamas (US) or pyjamas (Commonwealth) (), sometimes colloquially shortened to PJs, jammies, jim-jams, or in South Asia night suits, are several related types of clothing worn as nightwear or while lounging. Pajamas are soft garments derived from the Indian and Persian bottom-wear, the pyjamas. They originated in the Indian subcontinent and were adopted in the Western world as nightwear.
Etymology
According to the Oxford English Dictionary, the word pajama is a borrowing via Urdu from Persian. Its etymology is: Urdu pāy-jāma, pā-jāma and its etymon Persian pāy-jāma, pā-jāma, singular noun < Persian pāy, pā foot, leg + jāma clothing, garment (see jama n.1) + English -s , plural ending, after drawers.
History
The worldwide use of pajamas (the word and the clothing) outside the subcontinent is the result of adoption by British colonists in India in the 18th and 19th centuries, and the British influence on the wider Western world during the Victorian era. Pajamas had been introduced to England as "lounging attire" as early as the seventeenth century, then known as mogul's breeches (Beaumont and Fletcher) but they soon fell out of fashion. The word pajama (as pai jamahs, Paee-jams and variants) is recorded in English use in the first half of the nineteenth century. They did not become a fashion in Britain and the Western world as sleeping attire for men until the Victorian period, from about 1870.
Hobson-Jobson: A Glossary of Colloquial Anglo-Indian Words and Phrases (1990) summarizes the state of usage at the time (s.v. "pyjammas"): Such a garment is used by various persons in India e.g. by women of various classes, by Sikh men, and most by Mohammedans of both sexes. It was adopted from the Mohammedans by Europeans as an article of dishabille [highly casual clothing] and of night attire, and is synonymous with Long Drawers, Shulwaurs, and Mogul-Breeches [...] It is probable that we English took the habit like a good many others from the Portuguese. Thus Pyrard (c. 1521) says, in speaking of Goa Hospital: "Ils ont force caleçon sans quoy ne couchent iamais les Portugais des Indes" [fr., "They have plenty of the undergarments without which the Portuguese in India never sleep"] [...] The word is now used in London shops. A friend furnishes the following reminiscence: "The late Mr. B—, tailor in Jermyn Street, some on 12 years ago, in reply to a question why pyjammas had feet sewn on to them (as was sometimes the case with those furnished by London outfitters) answered: "I believe, Sir, it is because of the White Ants."
Types
Traditional
Traditional pajamas consist of a shirt-and-trousers combination made of soft fabric, such as flannel or lightweight silk. The shirt element usually has a placket front and sleeves with no cuffs.
Pajamas are usually worn as nightwear with bare feet and without undergarments. They are often worn for comfort by people in their homes, especially by children, especially on the weekend.
Contemporary
Contemporary pajamas are derived from traditional pajamas. There are many variations in style such as short sleeve pajamas, pajama bottoms of varying length, and pajamas incorporating various non-traditional materials. Often, people of both sexes opt to sleep or lounge in just pajama pants, usually with a t-shirt. For this reason, pajama pants are often sold as separates. Stretch-knit sleep apparel with rib-knit trimmings are common, mostly with young children.
Although pajamas are usually distinguished from one-piece sleeping garments such as nightgowns, in the US, they have sometimes included the latter or a somewhat shorter nightshirt as a top. Some pajamas, especially those designed for infants and toddlers, feature a drop seat (also known as a trap door or butt flap): a buttoned opening in the seat, designed to allow the wearer conveniently to use a toilet.
Fire safety
In the United States, pajamas for children are required to comply with fire safety regulations. If made of flammable fabric, such as cotton, they must be tight fitting. Loose-fitting pajamas must be treated with a fire retardant. Regulations in the United Kingdom are less stringent; pajamas which do not comply with fire safety standards may be sold, but must be labelled "KEEP AWAY FROM FIRE".
Society and culture
Pajamas in the Western world have been regarded as essentially indoors wear, or wear for the home, whether treated as daywear or nightwear.